--- a/RefactoringRope/CodeAssistServer.py	Sun Feb 25 13:26:19 2018 +0100
+++ b/RefactoringRope/CodeAssistServer.py	Sat Mar 31 13:46:49 2018 +0200
@@ -364,7 +364,7 @@
                 warning = self.tr("Language '{0}' is not supported.")\
                     .format(language)
             self.__documentationViewer.documentationReady(
-                warning,  isWarning=True)
+                warning, isWarning=True)
             return
         
         idString = self.__editorLanguageMapping[language]