diff --git a/VulkanHppGenerator.cpp b/VulkanHppGenerator.cpp
index 9991af6..dcb540b 100644
--- a/VulkanHppGenerator.cpp
+++ b/VulkanHppGenerator.cpp
@@ -2099,6 +2099,7 @@ std::string VulkanHppGenerator::generateArgumentListEnhanced( std::vector<ParamD
                                                               std::set<size_t> const &                  skippedParams,
                                                               std::set<size_t> const &                  singularParams,
                                                               std::set<size_t> const &                  templatedParams,
+                                                              std::vector<size_t> const &               chainedReturnParams,
                                                               bool                                      definition,
                                                               CommandFlavourFlags                       flavourFlags,
                                                               bool                                      withDispatcher ) const
@@ -2212,7 +2213,22 @@ std::string VulkanHppGenerator::generateArgumentListEnhanced( std::vector<ParamD
   }
   if ( withAllocators )
   {
+    bool useStructureChainAllocator = false;
     if ( flavourFlags & CommandFlavourFlagBits::chained )
+    {
+      // use StructureChainAllocator only, if a vector param is a chained return param
+      auto it = std::find_if(
+        chainedReturnParams.begin(), chainedReturnParams.end(), [&vectorParams]( size_t crp ) { return vectorParams.find( crp ) != vectorParams.end(); } );
+      if ( it != chainedReturnParams.end() )
+      {
+        // assert that there's no other chained vector param !
+        assert( std::find_if( std::next( it ),
+                              chainedReturnParams.end(),
+                              [&vectorParams]( size_t crp ) { return vectorParams.find( crp ) != vectorParams.end(); } ) == chainedReturnParams.end() );
+        useStructureChainAllocator = true;
+      }
+    }
+    if ( useStructureChainAllocator )
     {
       if ( encounteredArgument )
       {
@@ -3224,14 +3240,14 @@ std::string VulkanHppGenerator::generateCommandEnhanced( std::string const &
   std::string argumentTemplates = generateArgumentTemplates( commandData.params, returnParams, vectorParams, templatedParams, chainedReturnParams, false );
   auto [allocatorTemplates, uniqueHandleAllocatorTemplates] =
     generateAllocatorTemplates( returnParams, dataTypes, vectorParams, chainedReturnParams, flavourFlags, definition );
-  std::string typenameCheck  = generateTypenameCheck( returnParams, vectorParams, definition, dataTypes, flavourFlags );
+  std::string typenameCheck  = generateTypenameCheck( returnParams, vectorParams, chainedReturnParams, definition, dataTypes, flavourFlags );
   std::string nodiscard      = generateNoDiscard( !returnParams.empty(), 1 < commandData.successCodes.size(), 1 < commandData.errorCodes.size() );
   std::string returnType     = generateReturnType( commandData, returnParams, vectorParams, flavourFlags, false, dataTypes );
   std::string className      = initialSkipCount ? stripPrefix( commandData.params[initialSkipCount - 1].type.type, "Vk" ) : "";
   std::string classSeparator = commandData.handle.empty() ? "" : "::";
   std::string commandName    = generateCommandName( name, commandData.params, initialSkipCount, flavourFlags );
   std::string argumentList   = generateArgumentListEnhanced(
-    commandData.params, returnParams, vectorParams, skippedParams, singularParams, templatedParams, definition, flavourFlags, true );
+    commandData.params, returnParams, vectorParams, skippedParams, singularParams, templatedParams, chainedReturnParams, definition, flavourFlags, true );
   std::string constString    = commandData.handle.empty() ? "" : " const";
   std::string noexceptString = generateNoExcept( commandData.errorCodes, returnParams, vectorParams, flavourFlags, vectorSizeCheck.first, false );
 
@@ -7327,7 +7343,7 @@ std::string VulkanHppGenerator::generateRAIIHandleCommandEnhanced( std::string c
 
   std::string argumentTemplates = generateArgumentTemplates( commandData.params, returnParams, vectorParams, templatedParams, chainedReturnParams, true );
   std::string argumentList      = generateArgumentListEnhanced(
-    commandData.params, returnParams, vectorParams, skippedParams, singularParams, templatedParams, definition, flavourFlags, false );
+    commandData.params, returnParams, vectorParams, skippedParams, singularParams, templatedParams, chainedReturnParams, definition, flavourFlags, false );
   std::string commandName = generateCommandName( name, commandData.params, initialSkipCount, flavourFlags );
   std::string nodiscard   = generateNoDiscard(
     !returnParams.empty() || ( ( commandData.returnType != "VkResult" ) && ( commandData.returnType != "void" ) ), 1 < commandData.successCodes.size(), false );
@@ -10491,6 +10507,7 @@ ${cases}
 
 std::string VulkanHppGenerator::generateTypenameCheck( std::vector<size_t> const &               returnParams,
                                                        std::map<size_t, VectorParamData> const & vectorParams,
+                                                       std::vector<size_t> const &               chainedReturnParams,
                                                        bool                                      definition,
                                                        std::vector<std::string> const &          dataTypes,
                                                        CommandFlavourFlags                       flavourFlags ) const
@@ -10502,7 +10519,10 @@ std::string VulkanHppGenerator::generateTypenameCheck( std::vector<size_t> const
     {
       if ( vectorParams.find( returnParams[i] ) != vectorParams.end() )
       {
-        std::string elementType = ( flavourFlags & CommandFlavourFlagBits::chained ) ? "StructureChain" : stripPrefix( dataTypes[i], "VULKAN_HPP_NAMESPACE::" );
+        std::string elementType         = ( ( flavourFlags & CommandFlavourFlagBits::chained ) &&
+                                    ( std::find( chainedReturnParams.begin(), chainedReturnParams.end(), returnParams[i] ) != chainedReturnParams.end() ) )
+                                          ? "StructureChain"
+                                          : stripPrefix( dataTypes[i], "VULKAN_HPP_NAMESPACE::" );
         std::string extendedElementType = elementType;
         if ( flavourFlags & CommandFlavourFlagBits::unique )
         {
@@ -11973,7 +11993,7 @@ void VulkanHppGenerator::readExtension( tinyxml2::XMLElement const * element )
         { "(VK_KHR_get_physical_device_properties2,VK_VERSION_1_1)+(VK_KHR_dynamic_rendering,VK_VERSION_1_3)",
           "VK_KHR_get_physical_device_properties2+VK_KHR_dynamic_rendering,VK_VERSION_1_1+VK_KHR_dynamic_rendering,VK_VERSION_1_3" }
       };
-      auto                     canonicalIt = complexToCanonicalDepends.find( attribute.second );
+      auto        canonicalIt = complexToCanonicalDepends.find( attribute.second );
       std::string depends;
       if ( canonicalIt == complexToCanonicalDepends.end() )
       {
diff --git a/VulkanHppGenerator.hpp b/VulkanHppGenerator.hpp
index 942edd2..4fc95ae 100644
--- a/VulkanHppGenerator.hpp
+++ b/VulkanHppGenerator.hpp
@@ -491,6 +491,7 @@ private:
                                                                                  std::set<size_t> const &                  skippedParams,
                                                                                  std::set<size_t> const &                  singularParams,
                                                                                  std::set<size_t> const &                  templatedParams,
+                                                                                 std::vector<size_t> const &               chainedReturnParams,
                                                                                  bool                                      definition,
                                                                                  CommandFlavourFlags                       flavourFlags,
                                                                                  bool                                      withDispatcher ) const;
@@ -886,6 +887,7 @@ private:
   std::string                         generateThrowResultException() const;
   std::string                         generateTypenameCheck( std::vector<size_t> const &               returnParams,
                                                              std::map<size_t, VectorParamData> const & vectorParams,
+                                                             std::vector<size_t> const &               chainedReturnParams,
                                                              bool                                      definition,
                                                              std::vector<std::string> const &          dataTypes,
                                                              CommandFlavourFlags                       flavourFlags ) const;
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index e9861f0..2955ad0 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -20,6 +20,7 @@ add_subdirectory( DispatchLoaderDynamic )
 add_subdirectory( DispatchLoaderDynamicSharedLibrary )
 add_subdirectory( DispatchLoaderDynamicSharedLibraryClient )
 add_subdirectory( DispatchLoaderStatic )
+add_subdirectory( EnableBetaExtensions )
 add_subdirectory( ExtensionInspection )
 add_subdirectory( Flags )
 add_subdirectory( FormatTraits )
diff --git a/tests/EnableBetaExtensions/CMakeLists.txt b/tests/EnableBetaExtensions/CMakeLists.txt
new file mode 100644
index 0000000..1117203
--- /dev/null
+++ b/tests/EnableBetaExtensions/CMakeLists.txt
@@ -0,0 +1,17 @@
+# Copyright(c) 2023, NVIDIA CORPORATION. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+if( NOT VULKAN_HPP_TESTS_BUILD_ONLY_DYNAMIC )
+	vulkan_hpp__setup_test( NAME EnableBetaExtensions )
+endif()
\ No newline at end of file
diff --git a/tests/EnableBetaExtensions/EnableBetaExtensions.cpp b/tests/EnableBetaExtensions/EnableBetaExtensions.cpp
new file mode 100644
index 0000000..f3b0ef3
--- /dev/null
+++ b/tests/EnableBetaExtensions/EnableBetaExtensions.cpp
@@ -0,0 +1,24 @@
+// Copyright(c) 2023, NVIDIA CORPORATION. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// VulkanHpp Tests : EnableBetaExtensions
+//                   Compile test with VK_ENABLE_BETA_EXTENSIONS defined
+
+#define VK_ENABLE_BETA_EXTENSIONS
+#include <vulkan/vulkan.hpp>
+
+int main(int /*argc*/, char** /*argv*/)
+{
+  return 0;
+}
diff --git a/vulkan/vulkan_funcs.hpp b/vulkan/vulkan_funcs.hpp
index 0d7174a..e99c5a0 100644
--- a/vulkan/vulkan_funcs.hpp
+++ b/vulkan/vulkan_funcs.hpp
@@ -18684,11 +18684,11 @@ namespace VULKAN_HPP_NAMESPACE
             typename Uint8_tAllocator,
             typename Dispatch,
             typename B2,
-            typename std::enable_if<std::is_same<typename B2::value_type, StructureChain>::value, int>::type>
+            typename std::enable_if<std::is_same<typename B2::value_type, uint8_t>::value, int>::type>
   VULKAN_HPP_NODISCARD VULKAN_HPP_INLINE
     typename ResultValueType<std::pair<VULKAN_HPP_NAMESPACE::StructureChain<X, Y, Z...>, std::vector<uint8_t, Uint8_tAllocator>>>::type
     Device::getEncodedVideoSessionParametersKHR( const VULKAN_HPP_NAMESPACE::VideoEncodeSessionParametersGetInfoKHR & videoSessionParametersInfo,
-                                                 StructureChainAllocator &                                            structureChainAllocator,
+                                                 Uint8_tAllocator &                                                   uint8_tAllocator,
                                                  Dispatch const &                                                     d ) const
   {
     VULKAN_HPP_ASSERT( d.getVkHeaderVersion() == VK_HEADER_VERSION );
diff --git a/vulkan/vulkan_handles.hpp b/vulkan/vulkan_handles.hpp
index 567f51d..b464613 100644
--- a/vulkan/vulkan_handles.hpp
+++ b/vulkan/vulkan_handles.hpp
@@ -12198,13 +12198,13 @@ namespace VULKAN_HPP_NAMESPACE
     template <typename X,
               typename Y,
               typename... Z,
-              typename Uint8_tAllocator                                                                        = std::allocator<uint8_t>,
-              typename Dispatch                                                                                = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE,
-              typename B2                                                                                      = StructureChainAllocator,
-              typename std::enable_if<std::is_same<typename B2::value_type, StructureChain>::value, int>::type = 0>
+              typename Uint8_tAllocator                                                                 = std::allocator<uint8_t>,
+              typename Dispatch                                                                         = VULKAN_HPP_DEFAULT_DISPATCHER_TYPE,
+              typename B2                                                                               = Uint8_tAllocator,
+              typename std::enable_if<std::is_same<typename B2::value_type, uint8_t>::value, int>::type = 0>
     VULKAN_HPP_NODISCARD typename ResultValueType<std::pair<VULKAN_HPP_NAMESPACE::StructureChain<X, Y, Z...>, std::vector<uint8_t, Uint8_tAllocator>>>::type
       getEncodedVideoSessionParametersKHR( const VULKAN_HPP_NAMESPACE::VideoEncodeSessionParametersGetInfoKHR & videoSessionParametersInfo,
-                                           StructureChainAllocator &                                            structureChainAllocator,
+                                           Uint8_tAllocator &                                                   uint8_tAllocator,
                                            Dispatch const & d VULKAN_HPP_DEFAULT_DISPATCHER_ASSIGNMENT ) const;
 #  endif /* VULKAN_HPP_DISABLE_ENHANCED_MODE */
 #endif   /*VK_ENABLE_BETA_EXTENSIONS*/