diff --git a/repository/TiddlyWiki/Tiddler.class.st b/repository/TiddlyWiki/Tiddler.class.st
index 19b1348..fa19843 100644
--- a/repository/TiddlyWiki/Tiddler.class.st
+++ b/repository/TiddlyWiki/Tiddler.class.st
@@ -234,7 +234,7 @@ Tiddler >> fromDictionary: aDictionary [
 		revision: (aDictionary at: 'revision' ifAbsentPut: [ nil ]).
 	customKeys := aDictionary keys 
 		copyWithoutAll: (self class instanceVariables collect: [ :each | each name ]).
-	(customKeys includesKey: 'uid') ifFalse: [ self uidGenerator ].
+	(customKeys includes: 'uid') ifFalse: [ self uidGenerator ].
 	customKeys do: [:key | | valueTemp |
 		valueTemp :=  aDictionary at: key.
 		valueTemp class = Array