diff --git a/include/vk_mem_alloc.h b/include/vk_mem_alloc.h
index 4d35f45..ef23824 100644
--- a/include/vk_mem_alloc.h
+++ b/include/vk_mem_alloc.h
@@ -15598,7 +15598,7 @@ VkResult VmaAllocator_T::BindBufferMemory(
     VkBuffer hBuffer,
     const void* pNext)
 {
-    VkResult res = VK_SUCCESS;
+    VkResult res = VK_ERROR_UNKNOWN;
     switch(hAllocation->GetType())
     {
     case VmaAllocation_T::ALLOCATION_TYPE_DEDICATED:
@@ -15623,7 +15623,7 @@ VkResult VmaAllocator_T::BindImageMemory(
     VkImage hImage,
     const void* pNext)
 {
-    VkResult res = VK_SUCCESS;
+    VkResult res = VK_ERROR_UNKNOWN;
     switch(hAllocation->GetType())
     {
     case VmaAllocation_T::ALLOCATION_TYPE_DEDICATED: