diff --git a/t/plugin/authz-keycloak4.t b/t/plugin/authz-keycloak4.t
index 5dd68a43f00e..60aea47f05c4 100644
--- a/t/plugin/authz-keycloak4.t
+++ b/t/plugin/authz-keycloak4.t
@@ -147,6 +147,7 @@ success
 
             if code >= 300 then
                 ngx.status = code
+                return
             end
 
             local json_decode = require("toolkit.json").decode
@@ -210,6 +211,7 @@ success
 
             if code >= 300 then
                 ngx.status = code
+                return
             end
 
             local json_decode = require("toolkit.json").decode