Index: python/plugins/GdalTools/tools/doWarp.py
===================================================================
--- python/plugins/GdalTools/tools/doWarp.py	(revision 14431)
+++ python/plugins/GdalTools/tools/doWarp.py	(working copy)
@@ -44,6 +44,7 @@
         ]
       )
 
+      self.connect(self.inputLayerCombo, SIGNAL("currentIndexChanged(int)"), self.fillSourceSRSEditDefault)
       self.connect(self.selectInputFileButton, SIGNAL("clicked()"), self.fillInputFile)
       self.connect(self.selectOutputFileButton, SIGNAL("clicked()"), self.fillOutputFileEdit)
       self.connect(self.selectSourceSRSButton, SIGNAL("clicked()"), self.fillSourceSRSEdit)
@@ -101,7 +102,10 @@
       Utils.FileFilter.setLastUsedRasterFilter(lastUsedFilter)
 
       # get SRS for source file if necessary and possible
-      self.sourceSRSEdit.setText( Utils.getRasterSRS( self, inputFile ) )
+      crs = Utils.getRasterSRS( self, inputFile )
+      if not crs.isEmpty():
+        self.sourceSRSEdit.setText( Utils.getRasterSRS( self, inputFile ) )
+        self.sourceSRSCheck.setChecked( True )
 
       self.inputLayerCombo.setCurrentIndex(-1)
       self.inputLayerCombo.setEditText(inputFile)
@@ -144,6 +148,12 @@
       if dialog.exec_():
         self.sourceSRSEdit.setText(dialog.getProjection())
 
+  def fillSourceSRSEditDefault(self, index):
+      if index >= 0 and index in self.layers:
+        layer = self.layers[index]
+        self.sourceSRSEdit.setText("EPSG:" + str(layer.srs().epsg()))
+        self.sourceSRSCheck.setChecked( True )
+
   def fillTargetSRSEdit(self):
       dialog = SRSDialog( "Select the target SRS" )
       if dialog.exec_():
@@ -164,7 +174,7 @@
         arguments << "-wm"
         arguments << str(self.cacheSpin.value())
       if self.resizeGroupBox.isChecked():
-       	arguments << "-ts"
+        arguments << "-ts"
         arguments << str( self.widthSpin.value() )
         arguments << str( self.heightSpin.value() )
       if self.multithreadCheck.isChecked():