diff --git a/GPU/Directx9/FramebufferDX9.h b/GPU/Directx9/FramebufferDX9.h
index ada72ef752..b3ec0bdf54 100644
--- a/GPU/Directx9/FramebufferDX9.h
+++ b/GPU/Directx9/FramebufferDX9.h
@@ -19,6 +19,7 @@
 
 #include <list>
 #include <set>
+#include <map>
 
 #include "d3d9.h"