diff --git a/src/meshlabplugins/filter_mls/smallcomponentselection.h b/src/meshlabplugins/filter_mls/smallcomponentselection.h
index 7fbf3e676..a69da430f 100644
--- a/src/meshlabplugins/filter_mls/smallcomponentselection.h
+++ b/src/meshlabplugins/filter_mls/smallcomponentselection.h
@@ -54,7 +54,7 @@ public:
 			while (faceSeed<m.face.size())
 			{
 				CFaceO& f = m.face[faceSeed];
-				if (!f.IsS())
+				if (!f.IsD() && !f.IsS())
 				{
 					if (nonClosedOnly)
 					{