diff --git a/vcg/simplex/vertex/with/n.h b/vcg/simplex/vertex/with/n.h
index faf6e852..5a337b20 100644
--- a/vcg/simplex/vertex/with/n.h
+++ b/vcg/simplex/vertex/with/n.h
@@ -1,19 +1,20 @@
-#ifndef __VCGLIB_VERTEX__N__TYPE
-#define __VCGLIB_VERTEX__N__TYPE
-
-#define VERTEX_TYPE VertexN 
-
-#define __VCGLIB_VERTEX_N
-
-#include <vcg/simplex/vertex/base.h> 
-
-#undef VERTEX_TYPE 
-
-#undef __VCGLIB_VERTEX_N
-
-using namespace vcg;
-
-typedef VertexN<float>  VertexNf;
-typedef VertexN<double> VertexNd;
-
+#ifndef __VCGLIB_VERTEX__N__TYPE
+#define __VCGLIB_VERTEX__N__TYPE
+
+#define VERTEX_TYPE VertexN 
+
+#define __VCGLIB_VERTEX_N
+
+#include <vcg/simplex/vertex/base.h> 
+
+#undef VERTEX_TYPE 
+
+#undef __VCGLIB_VERTEX_N
+
+namespace vcg {
+
+typedef VertexN<float>  VertexNf;
+typedef VertexN<double> VertexNd;
+
+}
 #endif
\ No newline at end of file