diff --git a/src/meshlabplugins/filter_sampling/filter_sampling.cpp b/src/meshlabplugins/filter_sampling/filter_sampling.cpp
index 1993dc46a..ed120f436 100644
--- a/src/meshlabplugins/filter_sampling/filter_sampling.cpp
+++ b/src/meshlabplugins/filter_sampling/filter_sampling.cpp
@@ -1382,7 +1382,7 @@ int FilterDocSampling::postCondition( QAction* a ) const
 {
 	switch(ID(a)){
 		case FP_VORONOI_COLORING    :
-		case FP_DISK_COLORING       : return MeshModel::MM_VERTCOLOR;
+		case FP_DISK_COLORING       : return MeshModel::MM_VERTCOLOR | MeshModel::MM_VERTQUALITY;
 
 		case FP_ELEMENT_SUBSAMPLING       :
 		case FP_MONTECARLO_SAMPLING       :