diff --git a/src/meshlab/glarea.h b/src/meshlab/glarea.h
index 8b4cab0ad..11859acc7 100644
--- a/src/meshlab/glarea.h
+++ b/src/meshlab/glarea.h
@@ -309,12 +309,14 @@ public slots:
 		{
 
 			MeshModel *m = md()->getMesh(i.key());
-			foreach(QAction *p, i.value())
-			{
-				DecoratePlugin * decorInterface = qobject_cast<DecoratePlugin *>(p->parent());
-				decorInterface->endDecorate(p, *m, this->glas.currentGlobalParamSet, this);
-				decorInterface->setLog(&md()->Log);
-				decorInterface->startDecorate(p, *m, this->glas.currentGlobalParamSet, this);
+			if (m != nullptr) {
+				foreach(QAction *p, i.value())
+				{
+					DecoratePlugin * decorInterface = qobject_cast<DecoratePlugin *>(p->parent());
+					decorInterface->endDecorate(p, *m, this->glas.currentGlobalParamSet, this);
+					decorInterface->setLog(&md()->Log);
+					decorInterface->startDecorate(p, *m, this->glas.currentGlobalParamSet, this);
+				}
 			}
 		}