diff --git a/src/OBJECT/SMESH_Actor.cxx b/src/OBJECT/SMESH_Actor.cxx
index af0a9ab7a..b0136d8e4 100644
--- a/src/OBJECT/SMESH_Actor.cxx
+++ b/src/OBJECT/SMESH_Actor.cxx
@@ -83,6 +83,8 @@
 
 #ifdef _DEBUG_
 static int MYDEBUG = 0;
+#else
+static int MYDEBUG = 0;
 #endif
 
 static int aLineWidthInc = 2;