diff --git a/applications/utilities/mesh/generation/blockMesh/mergePatchPairs.H b/applications/utilities/mesh/generation/blockMesh/mergePatchPairs.H
index d62120d878..27b6ce8a0a 100644
--- a/applications/utilities/mesh/generation/blockMesh/mergePatchPairs.H
+++ b/applications/utilities/mesh/generation/blockMesh/mergePatchPairs.H
@@ -94,6 +94,7 @@
                         mergePatchPairs[pairI].first(),
                         mergePatchPairs[pairI].second(),
                         slidingInterface::INTEGRAL, // always integral
+                        false,
                         intersection::VISIBLE
                     )
                 );