diff --git a/src/SMESHDS/SMESHDS_GroupBase.cxx b/src/SMESHDS/SMESHDS_GroupBase.cxx
index 52b21e168..e374b723b 100644
--- a/src/SMESHDS/SMESHDS_GroupBase.cxx
+++ b/src/SMESHDS/SMESHDS_GroupBase.cxx
@@ -41,7 +41,7 @@ SMESHDS_GroupBase::SMESHDS_GroupBase (const int                 theID,
                                       const SMESHDS_Mesh*       theMesh,
                                       const SMDSAbs_ElementType theType):
        myID(theID), myMesh(theMesh), myType(theType), myStoreName(""),
-       myCurIndex(0), myCurID(-1)
+       myCurIndex(0), myCurID(-1), myColorGroup(0)
 {
 }