diff --git a/lib/auth/backends/ChainBackend.ts b/lib/auth/backends/ChainBackend.ts
index 9a95df54b..150d0937f 100644
--- a/lib/auth/backends/ChainBackend.ts
+++ b/lib/auth/backends/ChainBackend.ts
@@ -153,8 +153,10 @@ export default class ChainBackend extends BaseBackend {
         return Object.keys(policyMap).map(key => {
             const policyRes: any = {
                 isAllowed: policyMap[key].isAllowed,
-                action: policyMap[key].action,
             };
+            if (policyMap[key].action) {
+                policyRes.action = policyMap[key].action;
+            }
             if (typeof policyMap[key].isImplicit === 'boolean') {
                 policyRes.isImplicit = policyMap[key].isImplicit;
             }