diff --git a/templates/group_created.json.j2 b/templates/group_created.json.j2
index 5080a68..4a66eaf 100644
--- a/templates/group_created.json.j2
+++ b/templates/group_created.json.j2
@@ -562,7 +562,7 @@
     	  "name" : "join",
           "type" : "JOIN",
           "taskReferenceName" : "join_parallel_call_subworkflows",
-		  "joinOn :[
+		  "joinOn" :[
 		  	"call_enable_workspace_clients_for_context",
 		  	"call_jupyterhub_add_serveroptions_to_context"
 		  ]