diff --git a/pcsx2/COP0.cpp b/pcsx2/COP0.cpp
index ccc914cb94..57dc869ecd 100644
--- a/pcsx2/COP0.cpp
+++ b/pcsx2/COP0.cpp
@@ -16,6 +16,7 @@
 
 #include "PrecompiledHeader.h"
 #include "Common.h"
+#include "COP0.h"
 
 u32 s_iLastCOP0Cycle = 0;
 u32 s_iLastPERFCycle[2] = { 0, 0 };