diff --git a/components/engine/api/swagger.yaml b/components/engine/api/swagger.yaml
index 89619ac31d..a8279ae88c 100644
--- a/components/engine/api/swagger.yaml
+++ b/components/engine/api/swagger.yaml
@@ -321,7 +321,6 @@ definitions:
       MaximumRetryCount:
         type: "integer"
         description: "If `on-failure` is used, the number of times to retry before giving up"
-    default: {}
 
   Resources:
     description: "A container's resources (cgroups config, ulimits, etc)"