diff --git a/source/libs/tdb/src/db/tdbBtree.c b/source/libs/tdb/src/db/tdbBtree.c
index f663f4363d7afe7e0c258eadb94554678e2ce0e3..a148c1e36bbdabb249f6dc64dc7c86c6934e641e 100644
--- a/source/libs/tdb/src/db/tdbBtree.c
+++ b/source/libs/tdb/src/db/tdbBtree.c
@@ -1485,7 +1485,7 @@ static int tdbBtreeCellSize(const SPage *pPage, SCell *pCell, int dropOfp, TXN *
     if (dropOfp) {
       int    ret = 0;
       SPgno  pgno = *(SPgno *)(pCell + nLocal - sizeof(SPgno));
-      int    nLeft = nPayload - nLocal + sizeof(SPgno);
+      int    nLeft = nPayload - nLocal + sizeof(SPgno) + nHeader;
       SPage *ofp;
       int    bytes;
 
diff --git a/tests/system-test/6-cluster/5dnode3mnodeSep1VnodeStopMnodeCreateStb.py b/tests/system-test/6-cluster/5dnode3mnodeSep1VnodeStopMnodeCreateStb.py
index 371d147efc38735b4b0efdc19dc9288edbca5030..9a94632a12ea7746cc2d2ff9a660f8c83dbdb9c6 100644
--- a/tests/system-test/6-cluster/5dnode3mnodeSep1VnodeStopMnodeCreateStb.py
+++ b/tests/system-test/6-cluster/5dnode3mnodeSep1VnodeStopMnodeCreateStb.py
@@ -132,7 +132,7 @@ class TDTestCase:
         tdSql.error("create mnode on dnode 2")
         tdSql.query("select * from information_schema.ins_dnodes;")
         print(tdSql.queryResult)
-        clusterComCheck.checkDnodes(dnodeNumbers)
+        clusterComCheck.checkDnodes(dnodeNumbers, 60)
 
         # create database and stable
         clusterComCreate.create_database(tdSql, paraDict["dbName"],paraDict["dropFlag"], paraDict["vgroups"],paraDict['replica'])
diff --git a/tests/system-test/6-cluster/clusterCommonCheck.py b/tests/system-test/6-cluster/clusterCommonCheck.py
index c37e3541d4e7b70d484fd17030b9ce581993bb59..28c481083395c74c02238d380946bd00c0b74c0f 100644
--- a/tests/system-test/6-cluster/clusterCommonCheck.py
+++ b/tests/system-test/6-cluster/clusterCommonCheck.py
@@ -37,10 +37,10 @@ class ClusterComCheck:
         tdSql.init(conn.cursor())
         # tdSql.init(conn.cursor(), logSql)  # output sql.txt file
 
-    def checkDnodes(self,dnodeNumbers):
+    def checkDnodes(self,dnodeNumbers, timeout=30):
         count=0
         # print(tdSql)
-        while count < 30:
+        while count < timeout:
             tdSql.query("select * from information_schema.ins_dnodes")
             # tdLog.debug(tdSql.queryResult)
             status=0
@@ -50,14 +50,14 @@ class ClusterComCheck:
             tdLog.info(status)
 
             if status == dnodeNumbers:
-                tdLog.success("it find cluster with %d dnodes and check that all cluster dnodes are ready within 30s! " %dnodeNumbers)
+                tdLog.success("it find cluster with %d dnodes and check that all cluster dnodes are ready within %ds! " % (dnodeNumbers, count))
                 return True
             count+=1
             time.sleep(1)
         else:
             tdSql.query("select * from information_schema.ins_dnodes")
             tdLog.debug(tdSql.queryResult)
-            tdLog.exit("it find cluster with %d dnodes but  check that there dnodes are not ready within 30s ! "%dnodeNumbers)
+            tdLog.exit("it find cluster with %d dnodes but  check that there dnodes are not ready within %ds ! "% (dnodeNumbers, timeout))
 
     def checkDbRows(self,dbNumbers):
         dbNumbers=int(dbNumbers)