--- a/Preferences/ConfigurationPages/EditorHighlightingStylesPage.py	Sun Sep 12 12:06:50 2010 +0200
+++ b/Preferences/ConfigurationPages/EditorHighlightingStylesPage.py	Sun Sep 12 13:56:03 2010 +0200
@@ -411,6 +411,7 @@
         if f.open(QIODevice.ReadOnly):
             reader = HighlightingStylesReader(f, lexers)
             reader.readXML()
+            f.close()
         else:
             E5MessageBox.critical(self,
                 self.trUtf8("Import Highlighting Styles"),