diff --git a/src/meshlabplugins/filter_meshing/quadric_simp.cpp b/src/meshlabplugins/filter_meshing/quadric_simp.cpp
index 555a7cbfd..3cedf7bfa 100644
--- a/src/meshlabplugins/filter_meshing/quadric_simp.cpp
+++ b/src/meshlabplugins/filter_meshing/quadric_simp.cpp
@@ -46,8 +46,10 @@ void QuadricSimplification(CMeshO &m,int  TargetFaceNum, bool Selected, CallBack
     // Mark not writable un-selected vertices
     CMeshO::VertexIterator  vi;
     for(vi=m.vert.begin();vi!=m.vert.end();++vi) if(!(*vi).IsD())
+    {
           if(!(*vi).IsS()) (*vi).ClearW();
                       else (*vi).SetW();
+    }
   }
 
   if(pp.PreserveBoundary && !Selected) 
diff --git a/src/meshlabplugins/filter_meshing/quadric_tex_simp.cpp b/src/meshlabplugins/filter_meshing/quadric_tex_simp.cpp
index ac568d321..03fdff534 100644
--- a/src/meshlabplugins/filter_meshing/quadric_tex_simp.cpp
+++ b/src/meshlabplugins/filter_meshing/quadric_tex_simp.cpp
@@ -48,8 +48,10 @@ void QuadricTexSimplification(CMeshO &m,int  TargetFaceNum, bool Selected, CallB
     // Mark not writable un-selected vertices
     CMeshO::VertexIterator  vi;
     for(vi=m.vert.begin();vi!=m.vert.end();++vi) if(!(*vi).IsD())
+    {
 			if(!(*vi).IsS()) (*vi).ClearW();
 			else (*vi).SetW();
+    }
   }
 	
 	vcg::LocalOptimization<CMeshO> DeciSession(m);