--- a/WorkspaceCompletionSupport.st	Sat May 07 06:52:44 2016 +0200
+++ b/WorkspaceCompletionSupport.st	Mon May 09 21:43:19 2016 +0200
@@ -195,7 +195,7 @@
                                     ].    
                                     actions value:indexInSuggestions
                                 ] ifFalse:[
-                                    (actions at:indexInSuggestions) value
+                                    (actions at:indexInSuggestions) valueWithOptionalArgument:indexInSuggestions
                                 ].
                             ].
                         ].