diff --git a/source/dnode/mnode/impl/src/mndMnode.c b/source/dnode/mnode/impl/src/mndMnode.c
index 6b1c97b399..e49a974748 100644
--- a/source/dnode/mnode/impl/src/mndMnode.c
+++ b/source/dnode/mnode/impl/src/mndMnode.c
@@ -248,6 +248,10 @@ bool mndIsMnode(SMnode *pMnode, int32_t dnodeId) {
 }
 
 void mndGetMnodeEpSet(SMnode *pMnode, SEpSet *pEpSet) {
+  if (pMnode == NULL || pEpSet == NULL) {
+    return;
+  }
+
   SSdb   *pSdb = pMnode->pSdb;
   int32_t totalMnodes = sdbGetSize(pSdb, SDB_MNODE);
   if (totalMnodes == 0) {