diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index d73623d..53da44e 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -6860,10 +6860,7 @@ public:
     const VkAllocationCallbacks m_AllocationCallbacks;
 
     VmaVirtualBlock_T(const VmaVirtualBlockCreateInfo& createInfo);
-    ~VmaVirtualBlock_T()
-    {
-        vma_delete(GetAllocationCallbacks(), m_Metadata);
-    }
+    ~VmaVirtualBlock_T();
     VkResult Init()
     {
         return VK_SUCCESS;
@@ -16665,6 +16662,15 @@ VmaVirtualBlock_T::VmaVirtualBlock_T(const VmaVirtualBlockCreateInfo& createInfo
     m_Metadata->Init(createInfo.size);
 }
 
+VmaVirtualBlock_T::~VmaVirtualBlock_T()
+{
+    // This is an important assert!!!
+    // Hitting it means you have some memory leak - unreleased virtual allocations.
+    VMA_ASSERT(m_Metadata->IsEmpty() && "Some virtual allocations were not freed before destruction of this virtual block!");
+
+    vma_delete(GetAllocationCallbacks(), m_Metadata);
+}
+
 VkResult VmaVirtualBlock_T::Allocate(const VmaVirtualAllocationCreateInfo& createInfo, VkDeviceSize& outOffset)
 {
     outOffset = VK_WHOLE_SIZE;
diff --git a/src/Tests.cpp b/src/Tests.cpp
index c4afc89..b8828b3 100644
--- a/src/Tests.cpp
+++ b/src/Tests.cpp
@@ -2709,46 +2709,45 @@ static void TestVirtualBlocks()
     allocCreateInfo.pUserData = (void*)(uintptr_t)1;
     allocCreateInfo.size = 8 * MEGABYTE;
     VkDeviceSize alloc0Offset;
-    TEST(vmaVirtualAllocate(block, &allocCreateInfo, &alloc0Offset) == VK_SUCCESS && alloc0Offset < blockSize);
+    TEST(vmaVirtualAllocate(block, &allocCreateInfo, &alloc0Offset) == VK_SUCCESS);
+    TEST(alloc0Offset < blockSize);
 
-#if 0
     // # Validate the allocation
   
-    VIRTUAL_ALLOCATION_INFO allocInfo = {};
-    block->GetAllocationInfo(alloc0Offset, &allocInfo);
-    CHECK_BOOL( allocInfo.size == allocDesc.Size );
-    CHECK_BOOL( allocInfo.pUserData == allocDesc.pUserData );
+    VmaVirtualAllocationInfo allocInfo = {};
+    vmaGetVirtualAllocationInfo(block, alloc0Offset, &allocInfo);
+    TEST(allocInfo.size == allocCreateInfo.size);
+    TEST(allocInfo.pUserData = allocCreateInfo.pUserData);
 
     // # Check SetUserData
 
-    block->SetAllocationUserData(alloc0Offset, (void*)(uintptr_t)2);
-    block->GetAllocationInfo(alloc0Offset, &allocInfo);
-    CHECK_BOOL( allocInfo.pUserData == (void*)(uintptr_t)2 );
+    vmaSetVirtualAllocationUserData(block, alloc0Offset, (void*)(uintptr_t)2);
+    vmaGetVirtualAllocationInfo(block, alloc0Offset, &allocInfo);
+    TEST(allocInfo.pUserData = (void*)(uintptr_t)2);
 
     // # Allocate 4 MB
 
-    allocDesc.Size = 4 * MEGABYTE;
-    allocDesc.Alignment = alignment;
+    allocCreateInfo.size = 4 * MEGABYTE;
     UINT64 alloc1Offset;
-    CHECK_HR( block->Allocate(&allocDesc, &alloc1Offset) );
-    CHECK_BOOL( alloc1Offset < blockSize );
-    CHECK_BOOL( alloc1Offset + 4 * MEGABYTE <= alloc0Offset || alloc0Offset + 8 * MEGABYTE <= alloc1Offset ); // Check if they don't overlap.
+    TEST(vmaVirtualAllocate(block, &allocCreateInfo, &alloc1Offset) == VK_SUCCESS);
+    TEST(alloc1Offset < blockSize);
+    TEST(alloc1Offset + 4 * MEGABYTE <= alloc0Offset || alloc0Offset + 8 * MEGABYTE <= alloc1Offset); // Check if they don't overlap.
 
     // # Allocate another 8 MB - it should fail
 
-    allocDesc.Size = 8 * MEGABYTE;
-    allocDesc.Alignment = alignment;
+    allocCreateInfo.size = 8 * MEGABYTE;
     UINT64 alloc2Offset;
-    CHECK_BOOL( FAILED(block->Allocate(&allocDesc, &alloc2Offset)) );
-    CHECK_BOOL( alloc2Offset == UINT64_MAX );
+    TEST(vmaVirtualAllocate(block, &allocCreateInfo, &alloc2Offset) < 0);
+    TEST(alloc2Offset == VK_WHOLE_SIZE);
 
     // # Free the 4 MB block. Now allocation of 8 MB should succeed.
 
-    block->FreeAllocation(alloc1Offset);
-    CHECK_HR( block->Allocate(&allocDesc, &alloc2Offset) );
-    CHECK_BOOL( alloc2Offset < blockSize );
-    CHECK_BOOL( alloc2Offset + 4 * MEGABYTE <= alloc0Offset || alloc0Offset + 8 * MEGABYTE <= alloc2Offset ); // Check if they don't overlap.
+    vmaVirtualFree(block, alloc1Offset);
+    TEST(vmaVirtualAllocate(block, &allocCreateInfo, &alloc2Offset) == VK_SUCCESS);
+    TEST(alloc2Offset < blockSize);
+    TEST(alloc2Offset + 4 * MEGABYTE <= alloc0Offset || alloc0Offset + 8 * MEGABYTE <= alloc2Offset); // Check if they don't overlap.
 
+#if 0
     // # Calculate statistics
 
     StatInfo statInfo = {};
@@ -2803,6 +2802,7 @@ static void TestVirtualBlocks()
     block->FreeAllocation(alloc2Offset);
 #endif
 
+    vmaVirtualFree(block, alloc2Offset);
     //vmaClearVirtualBlock(block);
     vmaDestroyVirtualBlock(block);
 }