diff --git a/doc/erd-dsl.md b/doc/erd-dsl.md
index 50670d5..6ed9429 100644
--- a/doc/erd-dsl.md
+++ b/doc/erd-dsl.md
@@ -26,7 +26,7 @@ relationships:
     links:
       - user: 
           eq: 1
-      - url
+      - url:
           gte: 0
           lte: n
     properties: {}