diff --git a/vcg/simplex/tetrahedron/pos.h b/vcg/simplex/tetrahedron/pos.h
index d47348ce..078b1f6a 100644
--- a/vcg/simplex/tetrahedron/pos.h
+++ b/vcg/simplex/tetrahedron/pos.h
@@ -385,7 +385,7 @@ public:
     void Assert()
 #ifdef _DEBUG
     {
-        HETYPE ht=*this;
+        BasePosType ht=*this;
         ht.FlipT();
         ht.FlipT();
         assert(ht==*this);