diff --git a/pmc/surface.cc b/pmc/surface.cc
--- a/pmc/surface.cc
+++ b/pmc/surface.cc
@@ -3,7 +3,7 @@
  * Copyright (C) 2008 Markus Broeker
  */
 
-#include <surface.h>
+#include <surface.hpp>
 
 #define max(a,b) (((a) > (b)) ? (a) : (b))
 #define min(a,b) (((a) < (b)) ? (a) : (b))