diff --git a/python/plugins/fTools/tools/doGeoprocessing.py b/python/plugins/fTools/tools/doGeoprocessing.py
index 79a8cc4511b..fbdaa694fdd 100644
--- a/python/plugins/fTools/tools/doGeoprocessing.py
+++ b/python/plugins/fTools/tools/doGeoprocessing.py
@@ -468,7 +468,8 @@ class geoprocessingThread( QThread ):
     if useField:
       importedField = vproviderA.fields().at( self.myParam )
       importedFieldName = importedField.name( )
-      outFeatFields.append( importedField )
+    #
+    outFeatFields.extend( vproviderA.fields() )
     # creating area and perimeter fields
     areaField = QgsField("area", QVariant.Double)
     perimField = QgsField("perim", QVariant.Double)
@@ -476,8 +477,6 @@ class geoprocessingThread( QThread ):
     outFeatFields.append(areaField)
     outFeatFields.append(perimField)
     #
-    outFeatFields.extend( vproviderA.fields() )
-    #
     writer = QgsVectorFileWriter( self.myName, self.myEncoding, outFeatFields,
                                   QGis.WKBPolygon, vproviderA.crs() )
     if writer.hasError():