diff --git a/vcg/space/index/index2D/grid_util_2D.h b/vcg/space/index/index2D/grid_util_2D.h
index 7a8a182a..a24a8826 100644
--- a/vcg/space/index/index2D/grid_util_2D.h
+++ b/vcg/space/index/index2D/grid_util_2D.h
@@ -26,7 +26,7 @@
 #ifndef __VCGLIB_GRID_UTIL_2D
 #define __VCGLIB_GRID_UTIL_2D
 
-#include<vcg/space/index/index2D/base_2D.h>
+#include<vcg/space/index/index2D/base_2d.h>
 #include<vcg/space/box2.h>