diff --git a/Source/Core/Common/Src/Thread.cpp b/Source/Core/Common/Src/Thread.cpp
index a022b326a5..4040d04e42 100644
--- a/Source/Core/Common/Src/Thread.cpp
+++ b/Source/Core/Common/Src/Thread.cpp
@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "Thread.h"
+#include "Common.h"
 
 #ifdef __APPLE__
 #include <mach/mach.h>