diff --git a/src/meshlabplugins/filter_colorize/meshcolorize.cpp b/src/meshlabplugins/filter_colorize/meshcolorize.cpp
index 5235871d1..d1c7e9da3 100644
--- a/src/meshlabplugins/filter_colorize/meshcolorize.cpp
+++ b/src/meshlabplugins/filter_colorize/meshcolorize.cpp
@@ -35,21 +35,21 @@ using namespace std;
 using namespace vcg;
 
 ExtraMeshColorizePlugin::ExtraMeshColorizePlugin() {
-    typeList <<
-    CP_CLAMP_QUALITY <<
-    CP_SATURATE_QUALITY <<
-    CP_MAP_VQUALITY_INTO_COLOR <<
-    CP_MAP_FQUALITY_INTO_COLOR <<
-    CP_DISCRETE_CURVATURE <<
-    CP_TRIANGLE_QUALITY <<
-    CP_VERTEX_SMOOTH <<
-        CP_FACE_SMOOTH <<
-                CP_MESH_TO_FACE <<
-        CP_VERTEX_TO_FACE <<
-        CP_FACE_TO_VERTEX <<
-        CP_TEXTURE_TO_VERTEX <<
-    CP_RANDOM_FACE <<
-    CP_RANDOM_CONNECTED_COMPONENT;
+  typeList <<
+              CP_CLAMP_QUALITY <<
+              CP_SATURATE_QUALITY <<
+              CP_MAP_VQUALITY_INTO_COLOR <<
+              CP_MAP_FQUALITY_INTO_COLOR <<
+              CP_DISCRETE_CURVATURE <<
+              CP_TRIANGLE_QUALITY <<
+              CP_VERTEX_SMOOTH <<
+              CP_FACE_SMOOTH <<
+              CP_MESH_TO_FACE <<
+              CP_VERTEX_TO_FACE <<
+              CP_FACE_TO_VERTEX <<
+              CP_TEXTURE_TO_VERTEX <<
+              CP_RANDOM_FACE <<
+              CP_RANDOM_CONNECTED_COMPONENT;
 
   FilterIDType tt;
   foreach(tt , types())
@@ -219,6 +219,7 @@ break;
        float RangeMin = par.getFloat("minVal");
        float RangeMax = par.getFloat("maxVal");
        float perc = par.getDynamicFloat("perc");
+       bool usePerc = perc>0;
 
        Histogramf H;
        tri::Stat<CMeshO>::ComputePerFaceQualityHistogram(m.cm,H);
@@ -234,9 +235,14 @@ break;
          PercHi = max(math::Abs(PercLo), PercHi);
        }
 
-       tri::UpdateColor<CMeshO>::PerFaceQualityRamp(m.cm,PercLo,PercHi);
-       Log("Quality Range: %f %f; Used (%f %f) percentile (%f %f) ",
-           H.MinV(), H.MaxV(), PercLo, PercHi, perc, 100-perc);
+       if(usePerc){
+         tri::UpdateColor<CMeshO>::PerFaceQualityRamp(m.cm,PercLo,PercHi);
+         Log("Quality Range: %f %f; Used (%f %f) percentile (%f %f) ",
+             H.MinV(), H.MaxV(), PercLo, PercHi, perc, 100-perc);
+       } else {
+         tri::UpdateColor<CMeshO>::PerFaceQualityRamp(m.cm,RangeMin,RangeMax);
+         Log("Quality Range: %f %f; Used (%f %f)",H.MinV(),H.MaxV(),RangeMin,RangeMax);
+       }
        break;
    }
 
diff --git a/src/meshlabplugins/filter_colorize/meshcolorize.h b/src/meshlabplugins/filter_colorize/meshcolorize.h
index 23184e5fa..6924f1bab 100644
--- a/src/meshlabplugins/filter_colorize/meshcolorize.h
+++ b/src/meshlabplugins/filter_colorize/meshcolorize.h
@@ -8,7 +8,7 @@
  *                                                                    \      *
  * All rights reserved.                                                      *
  *                                                                           *
- * This program is free software; you can redistribute it and/or modify      *   
+ * This program is free software; you can redistribute it and/or modify      *
  * it under the terms of the GNU General Public License as published by      *
  * the Free Software Foundation; either version 2 of the License, or         *
  * (at your option) any later version.                                       *
@@ -30,7 +30,7 @@
 class ExtraMeshColorizePlugin : public QObject, public MeshFilterInterface
 {
     Q_OBJECT
-	MESHLAB_PLUGIN_IID_EXPORTER(MESH_FILTER_INTERFACE_IID)
+    MESHLAB_PLUGIN_IID_EXPORTER(MESH_FILTER_INTERFACE_IID)
     Q_INTERFACES(MeshFilterInterface)
 
 public:
@@ -45,7 +45,7 @@ public:
       CP_VERTEX_SMOOTH,
       CP_FACE_SMOOTH,
       CP_FACE_TO_VERTEX,
-			CP_TEXTURE_TO_VERTEX,
+      CP_TEXTURE_TO_VERTEX,
       CP_VERTEX_TO_FACE,
       CP_MESH_TO_FACE,
       CP_COLOR_NON_TOPO_COHERENT,
@@ -53,18 +53,18 @@ public:
       CP_RANDOM_CONNECTED_COMPONENT
     };
 
-    
+
 
     ExtraMeshColorizePlugin();
     ~ExtraMeshColorizePlugin(){}
-  
+
  QString filterName(FilterIDType filter) const;
  QString filterInfo(FilterIDType filterId) const;
-	int getPreConditions(QAction *) const;
-	int postCondition( QAction* ) const;
-	FilterClass getClass(QAction *);
-	void initParameterSet(QAction *,MeshModel &/*m*/, RichParameterSet & /*parent*/);
-	bool applyFilter(QAction *filter, MeshDocument &md, RichParameterSet & /*parent*/, vcg::CallBackPos * cb) ;
+    int getPreConditions(QAction *) const;
+    int postCondition( QAction* ) const;
+    FilterClass getClass(QAction *);
+    void initParameterSet(QAction *,MeshModel &/*m*/, RichParameterSet & /*parent*/);
+    bool applyFilter(QAction *filter, MeshDocument &md, RichParameterSet & /*parent*/, vcg::CallBackPos * cb) ;
 };
 
 #endif