Index: python/plugins/fTools/tools/doGeoprocessing.py
===================================================================
--- python/plugins/fTools/tools/doGeoprocessing.py	(revision 13307)
+++ python/plugins/fTools/tools/doGeoprocessing.py	(working copy)
@@ -12,6 +12,7 @@
     QDialog.__init__( self )
     self.iface = iface
     self.setupUi( self )
+    self.param.setValidator(QDoubleValidator(self.param))
     self.myFunction = function
     QObject.connect( self.btnBrowse, SIGNAL( "clicked()" ), self.outFile )
     QObject.connect( self.inShapeA, SIGNAL( "currentIndexChanged(QString)" ), self.checkA )
Index: python/plugins/fTools/tools/doRegPoints.py
===================================================================
--- python/plugins/fTools/tools/doRegPoints.py	(revision 13307)
+++ python/plugins/fTools/tools/doRegPoints.py	(working copy)
@@ -44,6 +44,10 @@
         QDialog.__init__(self)
         self.iface = iface
         self.setupUi(self)
+        self.xMin.setValidator(QDoubleValidator(self.xMin))
+        self.xMax.setValidator(QDoubleValidator(self.xMax))
+        self.yMin.setValidator(QDoubleValidator(self.yMin))
+        self.yMax.setValidator(QDoubleValidator(self.yMax))
         QObject.connect(self.toolOut, SIGNAL("clicked()"), self.outFile)
         self.setWindowTitle( self.tr("Regular points") )
         self.progressBar.setValue(0)