diff --git a/src/sampling/sampledSurface/isoSurface/isoSurfaceTemplates.C b/src/sampling/sampledSurface/isoSurface/isoSurfaceTemplates.C
index 50888ee31d..2024952864 100644
--- a/src/sampling/sampledSurface/isoSurface/isoSurfaceTemplates.C
+++ b/src/sampling/sampledSurface/isoSurface/isoSurfaceTemplates.C
@@ -369,7 +369,7 @@ void Foam::isoSurface::generateTriPoints
     {
         const polyPatch& pp = patches[patchI];
 
-        if (pp.coupled())
+        if (isA<processorPolyPatch>(pp))
         {
             if (refCast<const processorPolyPatch>(pp).owner())
             {