diff --git a/depthmapX/salaobj/shapemapdx.h b/depthmapX/salaobj/shapemapdx.h
index 58b12a2..435c957 100644
--- a/depthmapX/salaobj/shapemapdx.h
+++ b/depthmapX/salaobj/shapemapdx.h
@@ -24,7 +24,7 @@ class ShapeMapDX : public AttributeMapDX {
     mutable bool m_newshape = false; // if a new shape has been added
 
     mutable int m_curlinkline = -1;
-    mutable int m_curunlinkpoint;
+    mutable int m_curunlinkpoint = -1;
 
     mutable bool m_showLines;
     mutable bool m_showFill;