diff --git a/VulkanHppGenerator.cpp b/VulkanHppGenerator.cpp
index 7970c8d..c4ebb24 100644
--- a/VulkanHppGenerator.cpp
+++ b/VulkanHppGenerator.cpp
@@ -515,7 +515,7 @@ std::string const uniqueHandleHeader = { R"(
     Type release()
     {
       Type value = m_value;
-      m_value = nullptr;
+      m_value = VK_NULL_HANDLE;
       return value;
     }
 
diff --git a/vulkan/vulkan.hpp b/vulkan/vulkan.hpp
index f655d07..d4cf58c 100644
--- a/vulkan/vulkan.hpp
+++ b/vulkan/vulkan.hpp
@@ -397,7 +397,7 @@ namespace vk
     Type release()
     {
       Type value = m_value;
-      m_value = nullptr;
+      m_value = VK_NULL_HANDLE;
       return value;
     }