--- a/ChangeSetDiff.st	Sun Sep 08 16:00:39 2019 +0200
+++ b/ChangeSetDiff.st	Sun Sep 08 16:27:47 2019 +0200
@@ -178,7 +178,7 @@
             ]
         ]
     ].
-    diffsByClass size = 1 ifTrue:[
+    diffsByClass size == 1 ifTrue:[
         diffset addAll:diffsByClass anElement diffs
     ] ifFalse:[
         diffset addAll:diffsByClass values