diff --git a/QuickWKT.py b/QuickWKT.py
index 139ba6f..d720d87 100644
--- a/QuickWKT.py
+++ b/QuickWKT.py
@@ -88,6 +88,7 @@ def quickwkt(self):
         result = self.dlg.exec_()
         # See if OK was pressed
         if result == 1 and self.dlg.wkt.toPlainText():
+            self.new_layer_created = False
             text = str(self.dlg.wkt.toPlainText().upper())
             layerTitle = self.dlg.layerTitle.text() or 'QuickWKT'
             try:
@@ -263,6 +264,10 @@ def save_wkt(self, wkt, layerTitle=None):
         for typ in list(newFeatures.keys()):
             for f in newFeatures.get(typ):
                 layer = self.createLayer(typeMap[typ], layerTitle , f[1])
+                if self.dlg.cbxcleandata.isChecked() and not self.new_layer_created:
+                    self.new_layer_created = True
+                    layer.dataProvider().truncate()
+
                 layer.dataProvider().addFeatures([f[0]])
                 layer.updateExtents()
                 layer.reload()
diff --git a/Ui_QuickWKT.ui b/Ui_QuickWKT.ui
index 1d21a94..6b323e7 100644
--- a/Ui_QuickWKT.ui
+++ b/Ui_QuickWKT.ui
@@ -80,6 +80,13 @@
            </property>
           </spacer>
          </item>
+         <item>
+          <widget class="QCheckBox" name="cbxcleandata">
+           <property name="text">
+            <string>Start with an empty layer</string>
+           </property>
+          </widget>
+         </item>
         </layout>
        </item>
        <item>