diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index 0d01d51..b2783b1 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -2366,7 +2366,7 @@ VMA_CALL_PRE VkBool32 VMA_CALL_POST vmaIsVirtualBlockEmpty(
 */
 VMA_CALL_PRE void VMA_CALL_POST vmaGetVirtualAllocationInfo(
     VmaVirtualBlock VMA_NOT_NULL virtualBlock,
-    VmaVirtualAllocation allocation, VmaVirtualAllocationInfo* VMA_NOT_NULL pVirtualAllocInfo);
+    VmaVirtualAllocation VMA_NOT_NULL_NON_DISPATCHABLE allocation, VmaVirtualAllocationInfo* VMA_NOT_NULL pVirtualAllocInfo);
 
 /** \brief Allocates new virtual allocation inside given #VmaVirtualBlock.
 
@@ -2382,7 +2382,7 @@ If the allocation fails due to not enough free space available, `VK_ERROR_OUT_OF
 VMA_CALL_PRE VkResult VMA_CALL_POST vmaVirtualAllocate(
     VmaVirtualBlock VMA_NOT_NULL virtualBlock,
     const VmaVirtualAllocationCreateInfo* VMA_NOT_NULL pCreateInfo,
-    VmaVirtualAllocation* VMA_NOT_NULL pAllocation,
+    VmaVirtualAllocation VMA_NULLABLE_NON_DISPATCHABLE* VMA_NOT_NULL pAllocation,
     VkDeviceSize* VMA_NULLABLE pOffset);
 
 /** \brief Frees virtual allocation inside given #VmaVirtualBlock.
@@ -2391,7 +2391,7 @@ It is correct to call this function with `allocation == VK_NULL_HANDLE` - it doe
 */
 VMA_CALL_PRE void VMA_CALL_POST vmaVirtualFree(
     VmaVirtualBlock VMA_NOT_NULL virtualBlock,
-    VmaVirtualAllocation allocation);
+    VmaVirtualAllocation VMA_NULLABLE_NON_DISPATCHABLE allocation);
 
 /** \brief Frees all virtual allocations inside given #VmaVirtualBlock.
 
@@ -2408,7 +2408,7 @@ VMA_CALL_PRE void VMA_CALL_POST vmaClearVirtualBlock(
 */
 VMA_CALL_PRE void VMA_CALL_POST vmaSetVirtualAllocationUserData(
     VmaVirtualBlock VMA_NOT_NULL virtualBlock,
-    VmaVirtualAllocation allocation,
+    VmaVirtualAllocation VMA_NOT_NULL_NON_DISPATCHABLE allocation,
     void* VMA_NULLABLE pUserData);
 
 /** \brief Calculates and returns statistics about virtual allocations and memory usage in given #VmaVirtualBlock.
@@ -17835,7 +17835,7 @@ VMA_CALL_PRE VkBool32 VMA_CALL_POST vmaIsVirtualBlockEmpty(VmaVirtualBlock VMA_N
 }
 
 VMA_CALL_PRE void VMA_CALL_POST vmaGetVirtualAllocationInfo(VmaVirtualBlock VMA_NOT_NULL virtualBlock,
-    VmaVirtualAllocation allocation, VmaVirtualAllocationInfo* VMA_NOT_NULL pVirtualAllocInfo)
+    VmaVirtualAllocation VMA_NOT_NULL_NON_DISPATCHABLE allocation, VmaVirtualAllocationInfo* VMA_NOT_NULL pVirtualAllocInfo)
 {
     VMA_ASSERT(virtualBlock != VK_NULL_HANDLE && pVirtualAllocInfo != VMA_NULL);
     VMA_DEBUG_LOG("vmaGetVirtualAllocationInfo");
@@ -17844,7 +17844,7 @@ VMA_CALL_PRE void VMA_CALL_POST vmaGetVirtualAllocationInfo(VmaVirtualBlock VMA_
 }
 
 VMA_CALL_PRE VkResult VMA_CALL_POST vmaVirtualAllocate(VmaVirtualBlock VMA_NOT_NULL virtualBlock,
-    const VmaVirtualAllocationCreateInfo* VMA_NOT_NULL pCreateInfo, VmaVirtualAllocation* VMA_NOT_NULL pAllocation,
+    const VmaVirtualAllocationCreateInfo* VMA_NOT_NULL pCreateInfo, VmaVirtualAllocation VMA_NULLABLE_NON_DISPATCHABLE* VMA_NOT_NULL pAllocation,
     VkDeviceSize* VMA_NULLABLE pOffset)
 {
     VMA_ASSERT(virtualBlock != VK_NULL_HANDLE && pCreateInfo != VMA_NULL && pAllocation != VMA_NULL);
@@ -17853,7 +17853,7 @@ VMA_CALL_PRE VkResult VMA_CALL_POST vmaVirtualAllocate(VmaVirtualBlock VMA_NOT_N
     return virtualBlock->Allocate(*pCreateInfo, *pAllocation, pOffset);
 }
 
-VMA_CALL_PRE void VMA_CALL_POST vmaVirtualFree(VmaVirtualBlock VMA_NOT_NULL virtualBlock, VmaVirtualAllocation allocation)
+VMA_CALL_PRE void VMA_CALL_POST vmaVirtualFree(VmaVirtualBlock VMA_NOT_NULL virtualBlock, VmaVirtualAllocation VMA_NULLABLE_NON_DISPATCHABLE allocation)
 {
     if(allocation != VK_NULL_HANDLE)
     {
@@ -17873,7 +17873,7 @@ VMA_CALL_PRE void VMA_CALL_POST vmaClearVirtualBlock(VmaVirtualBlock VMA_NOT_NUL
 }
 
 VMA_CALL_PRE void VMA_CALL_POST vmaSetVirtualAllocationUserData(VmaVirtualBlock VMA_NOT_NULL virtualBlock,
-    VmaVirtualAllocation allocation, void* VMA_NULLABLE pUserData)
+    VmaVirtualAllocation VMA_NOT_NULL_NON_DISPATCHABLE allocation, void* VMA_NULLABLE pUserData)
 {
     VMA_ASSERT(virtualBlock != VK_NULL_HANDLE);
     VMA_DEBUG_LOG("vmaSetVirtualAllocationUserData");