diff --git a/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp b/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
index 13cfd99f51..43946ae0e0 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/Jit.cpp
@@ -37,7 +37,7 @@
 #include "JitCache.h"
 #include "JitRegCache.h"
 
-#ifdef JITTEST
+#if defined JITTEST && JITTEST
 #error Jit64 cannot have JITTEST define
 #endif
 
diff --git a/Source/Core/Core/Src/PowerPC/Jit64IL/Jit.cpp b/Source/Core/Core/Src/PowerPC/Jit64IL/Jit.cpp
index 0bd4f43e09..04bed5436a 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64IL/Jit.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64IL/Jit.cpp
@@ -37,7 +37,7 @@
 #include "JitCache.h"
 #include "JitRegCache.h"
 
-#ifndef JITTEST
+#if  !defined JITTEST || ! JITTEST
 #error JitIL needs JITTEST define
 #endif