diff --git a/src/mesh/autoMesh/autoHexMesh/refinementFeatures/refinementFeatures.C b/src/mesh/autoMesh/autoHexMesh/refinementFeatures/refinementFeatures.C
index 320f3b3d1c..2946abc32d 100644
--- a/src/mesh/autoMesh/autoHexMesh/refinementFeatures/refinementFeatures.C
+++ b/src/mesh/autoMesh/autoHexMesh/refinementFeatures/refinementFeatures.C
@@ -173,7 +173,7 @@ void Foam::refinementFeatures::read
                 labelListList(0),   // edgeNormals
                 labelListList(0),   // featurePointNormals
                 labelListList(0),   // featurePointEdges
-                labelList(0)        // regionEdges
+                identity(newEdges.size())   // regionEdges
             );