diff --git a/EGrScene.h b/EGrScene.h
index a6fb03d..d021e6b 100644
--- a/EGrScene.h
+++ b/EGrScene.h
@@ -180,4 +180,4 @@ enum TxrRepeat { TXR_CLAMP = 0,
 //------------------------ Costanti per tipo visualizz. Zmap -----------------
 enum ZmapShowMode { ZSM_SURF = 1,
                     ZSM_LINES = 2,
-                    ZSM_BOTH = 3} ;
+                    ZSM_NORMALS = 4} ;