diff --git a/source/dnode/mnode/impl/src/mndUser.c b/source/dnode/mnode/impl/src/mndUser.c
index 0b4d49ed583ad27090014df238c64a83fd7dc683..46dc417c6af2b35ea608c2bdab8f250b4eab9c94 100644
--- a/source/dnode/mnode/impl/src/mndUser.c
+++ b/source/dnode/mnode/impl/src/mndUser.c
@@ -507,7 +507,7 @@ static int32_t mndProcessAlterUserReq(SNodeMsg *pReq) {
   }
 
   if (alterReq.alterType == TSDB_ALTER_USER_REMOVE_READ_DB || alterReq.alterType == TSDB_ALTER_USER_REMOVE_ALL_DB) {
-    if (strcmp(alterReq.dbname, "*") != 0) {
+    if (strcmp(alterReq.dbname, "1.*") != 0) {
       int32_t len = strlen(alterReq.dbname) + 1;
       SDbObj *pDb = mndAcquireDb(pMnode, alterReq.dbname);
       if (pDb == NULL) {
@@ -521,7 +521,7 @@ static int32_t mndProcessAlterUserReq(SNodeMsg *pReq) {
   }
 
   if (alterReq.alterType == TSDB_ALTER_USER_REMOVE_WRITE_DB || alterReq.alterType == TSDB_ALTER_USER_REMOVE_ALL_DB) {
-    if (strcmp(alterReq.dbname, "*") != 0) {
+    if (strcmp(alterReq.dbname, "1.*") != 0) {
       int32_t len = strlen(alterReq.dbname) + 1;
       SDbObj *pDb = mndAcquireDb(pMnode, alterReq.dbname);
       if (pDb == NULL) {