diff --git a/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/PermissionController.java b/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/PermissionController.java
index 820e7d19983..d72b8bd8ce2 100644
--- a/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/PermissionController.java
+++ b/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/PermissionController.java
@@ -259,7 +259,7 @@ public ResponseEntity<Void> assignClusterNamespaceRoleToUser(@PathVariable Strin
   }
 
   @PreAuthorize(value = "@permissionValidator.hasAssignRolePermission(#appId)")
-  @DeleteMapping("/apps/{appId}/envs/{env}/clusters/{clusterName}/ns _roles/{roleType}")
+  @DeleteMapping("/apps/{appId}/envs/{env}/clusters/{clusterName}/ns_roles/{roleType}")
   public ResponseEntity<Void> removeClusterNamespaceRoleFromUser(@PathVariable String appId, @PathVariable String env, @PathVariable String clusterName,
       @PathVariable String roleType, @RequestParam String user) {
     RequestPrecondition.checkArgumentsNotEmpty(user);
diff --git a/apollo-portal/src/test/java/com/ctrip/framework/apollo/portal/controller/PermissionControllerTest.java b/apollo-portal/src/test/java/com/ctrip/framework/apollo/portal/controller/PermissionControllerTest.java
index 6e953923687..8785ef60cec 100644
--- a/apollo-portal/src/test/java/com/ctrip/framework/apollo/portal/controller/PermissionControllerTest.java
+++ b/apollo-portal/src/test/java/com/ctrip/framework/apollo/portal/controller/PermissionControllerTest.java
@@ -76,7 +76,7 @@ public void testClusterNamespaceRoleLifeCycle() {
 
     // check role assigned
     ResponseEntity<ClusterNamespaceRolesAssignedUsers> afterAssign = restTemplate.getForEntity(
-        url("/apps/{appId}/envs/{env}/clusters/{clusterName}/role_users"),
+        url("/apps/{appId}/envs/{env}/clusters/{clusterName}/ns_role_users"),
         ClusterNamespaceRolesAssignedUsers.class, appId, env, clusterName);
     assertEquals(200, afterAssign.getStatusCodeValue());
     body = afterAssign.getBody();