diff --git a/src/mesa/main/pixelstore.h b/src/mesa/main/pixelstore.h
index ee963f9ba3c..47bff4276d1 100644
--- a/src/mesa/main/pixelstore.h
+++ b/src/mesa/main/pixelstore.h
@@ -33,6 +33,7 @@
 
 
 #include "glheader.h"
+#include "mtypes.h"
 
 
 extern void GLAPIENTRY