diff --git a/libs/liquidfun/Contributions/Utilities/ConvexDecomposition/b2Polygon.h b/libs/liquidfun/Contributions/Utilities/ConvexDecomposition/b2Polygon.h
index dcf2c2c..33ac456 100755
--- a/libs/liquidfun/Contributions/Utilities/ConvexDecomposition/b2Polygon.h
+++ b/libs/liquidfun/Contributions/Utilities/ConvexDecomposition/b2Polygon.h
@@ -21,6 +21,7 @@
 
 #include "Box2D.h"
 #include "b2Triangle.h"
+#include "cstdio"
 
 class b2Polygon;
 
@@ -120,4 +121,4 @@ class b2PolyNode{
 	b2PolyNode* GetRightestConnection(b2Vec2& incomingDir);
 };
 
-#endif
\ No newline at end of file
+#endif