--- a/Plugins/VcsPlugins/vcsMercurial/HgSummaryDialog.py	Sun Jul 21 18:14:50 2013 +0200
+++ b/Plugins/VcsPlugins/vcsMercurial/HgSummaryDialog.py	Sun Jul 21 19:14:09 2013 +0200
@@ -88,7 +88,7 @@
         else:
             self.process = QProcess()
             env = QProcessEnvironment.systemEnvironment()
-            env.insert("LANG", "C")
+            env.insert("LANGUAGE", "C")
             self.process.setProcessEnvironment(env)
             self.process.finished.connect(self.__procFinished)
             self.process.readyReadStandardOutput.connect(self.__readStdout)