diff --git a/reactos/ntoskrnl/include/ntoskrnl.h b/reactos/ntoskrnl/include/ntoskrnl.h
index b3d249b0a2f..3eaad9df424 100644
--- a/reactos/ntoskrnl/include/ntoskrnl.h
+++ b/reactos/ntoskrnl/include/ntoskrnl.h
@@ -13,6 +13,7 @@
 #include <psdk/ntverp.h>
 
 /* DDK/IFS/NDK Headers */
+#define _REALLY_GET_CALLERS_CALLER_
 #ifdef _MSC_VER
 #include <excpt.h>
 #include <ntdef.h>