diff --git a/tests/render_tests.cpp b/tests/render_tests.cpp
index 5b79813..63e9d9b 100644
--- a/tests/render_tests.cpp
+++ b/tests/render_tests.cpp
@@ -86,7 +86,7 @@
 
 #include "vkrenderframework.h"
 #ifdef DEBUG_CALLBACK
-void VKAPI myDbgFunc(
+VKAPI_ATTR void VKAPI_CALL myDbgFunc(
     VK_DBG_MSG_TYPE     msgType,
     VkValidationLevel validationLevel,
     VkObject             srcObject,