diff --git a/Source/Project64-core/stdafx.h b/Source/Project64-core/stdafx.h
index b4b1cc7a7..96a563ce2 100644
--- a/Source/Project64-core/stdafx.h
+++ b/Source/Project64-core/stdafx.h
@@ -1,5 +1,6 @@
 #include <string.h>
 
+#include <Common/MemTest.h>
 #include <Common/stdtypes.h>
 #include <Common/StdString.h>
 #include <Common/Trace.h>