diff --git a/.smalltalk.ston b/.smalltalk.ston
index 2adddf267..193409a47 100644
--- a/.smalltalk.ston
+++ b/.smalltalk.ston
@@ -7,7 +7,7 @@ SmalltalkCISpec {
       #load : [ 'Tests' ],
       #directory : 'repository'
     }
-  ]
+  ],
   #testing : {
     #include : {
       #classes : [ #SentButNotImplementedTest, #UndefinedSymbolsTest ]