diff --git a/vcg/math/random_generator.h b/vcg/math/random_generator.h
index ba8e1dd9..eb4ea5bd 100644
--- a/vcg/math/random_generator.h
+++ b/vcg/math/random_generator.h
@@ -24,9 +24,8 @@
 #ifndef __VCG_RandomGenerator
 #define __VCG_RandomGenerator
 
-#include <functional>
 namespace vcg {
-  namespace math {
+namespace math {
 
 /**
  * RandomGenerator includes two Random Number Generation algortihms.