--- a/Tools__NewSystemBrowser.st	Sun Sep 08 17:56:28 2019 +0200
+++ b/Tools__NewSystemBrowser.st	Sun Sep 08 17:58:34 2019 +0200
@@ -19940,7 +19940,7 @@
 
     self canUseRefactoringSupport ifTrue:[
         classes := self selectedClassesValue.
-        classes size ~= 1 ifTrue:[
+        classes size ~~ 1 ifTrue:[
             self breakPoint: #jv. "/'Multiple selected classes are not yet supported'
             ^ BrowserEnvironment empty.
         ].