diff --git a/vcg/space/deprecated_point3.h b/vcg/space/deprecated_point3.h
index 2e86074a..45e2d255 100644
--- a/vcg/space/deprecated_point3.h
+++ b/vcg/space/deprecated_point3.h
@@ -96,6 +96,7 @@ Edited doxygen comments
 
 #include <assert.h>
 #include <algorithm>
+#include <cmath>
 #include <vcg/math/base.h>
 
 namespace vcg {