--- a/QScintilla/Editor.py	Tue Mar 10 20:20:46 2015 +0100
+++ b/QScintilla/Editor.py	Wed Mar 11 18:25:37 2015 +0100
@@ -1508,7 +1508,8 @@
                 language = Preferences.getEditorLexerAssoc(basename)
             if not language:
                 bindName = self.__bindName(self.text(0))
-                language = Preferences.getEditorLexerAssoc(bindName)
+                if bindName:
+                    language = Preferences.getEditorLexerAssoc(bindName)
             if language == "Python":
                 # correction for Python
                 pyVer = Utilities.determinePythonVersion(