diff --git a/source/util/inc/tmempoolInt.h b/source/util/inc/tmempoolInt.h
index afbb6cac61..183ce3ee04 100755
--- a/source/util/inc/tmempoolInt.h
+++ b/source/util/inc/tmempoolInt.h
@@ -41,12 +41,12 @@ extern "C" {
 #define MP_RETIRE_MID_THRESHOLD_PERCENT           (0.9)
 #define MP_RETIRE_LOW_THRESHOLD_PERCENT           (0.85)
 #define MP_RETIRE_UNIT_PERCENT               (0.1)
-#define MP_RETIRE_UNIT_MIN_SIZE              (50 * 1048576UL)
-#define MP_CFG_UPDATE_MIN_RESERVE_SIZE       (50 * 1024 * 1048576UL)
+#define MP_RETIRE_UNIT_MIN_SIZE              (50 * 1048576L)
+#define MP_CFG_UPDATE_MIN_RESERVE_SIZE       (50 * 1024 * 1048576L)
 
 #define MP_DEFAULT_RESERVE_MEM_PERCENT 20
-#define MP_MIN_FREE_SIZE_AFTER_RESERVE (4 * 1024 * 1048576UL)
-#define MP_MIN_MEM_POOL_SIZE           (5 * 1024 * 1048576UL)
+#define MP_MIN_FREE_SIZE_AFTER_RESERVE (4 * 1024 * 1048576L)
+#define MP_MIN_MEM_POOL_SIZE           (5 * 1024 * 1048576L)
 
 
 // FLAGS AREA
diff --git a/source/util/src/tmempool.c b/source/util/src/tmempool.c
index 49e5dccc50..4189efd684 100644
--- a/source/util/src/tmempool.c
+++ b/source/util/src/tmempool.c
@@ -319,7 +319,7 @@ int32_t mpChkFullQuota(SMemPool* pPool, SMPSession* pSession, int64_t size) {
   SMPJob* pJob = pSession->pJob;  
   int64_t cAllocSize = atomic_add_fetch_64(&pJob->job.allocMemSize, size);
   int64_t quota = atomic_load_32(pPool->cfg.jobQuota);
-  if (quota > 0 && cAllocSize / 1048576UL > quota) {
+  if (quota > 0 && cAllocSize > (quota * 1048576L)) {
     code = TSDB_CODE_QRY_REACH_QMEM_THRESHOLD;
     uWarn("job 0x%" PRIx64 " allocSize %" PRId64 " is over than quota %" PRId64, pJob->job.jobId, cAllocSize, quota);
     pPool->cfg.cb.reachFp(pJob->job.jobId, pJob->job.clientId, code);
diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index 47a6b418f6..8e7147c2d3 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -395,6 +395,7 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 0-others/test_hot_refresh_configurations.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 0-others/subscribe_stream_privilege.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 0-others/empty_identifier.py
+,,y,system-test,./pytest.sh python3 ./test.py -f 0-others/qmemCtrl.py
 
 ,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/composite_primary_key_create.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/composite_primary_key_insert.py
diff --git a/tests/system-test/0-others/qmemCtrl.py b/tests/system-test/0-others/qmemCtrl.py
index 0df9a7ccab..2aacc2c6ed 100644
--- a/tests/system-test/0-others/qmemCtrl.py
+++ b/tests/system-test/0-others/qmemCtrl.py
@@ -38,10 +38,10 @@ class TDTestCase:
         }
 
     def update_cfg(self, use_mpool = 1, min_rsize = 0, single_msize = 0):
-        updatecfgDict = {'queryUseMemoryPool':'{use_mpool}','minReservedMemorySize': min_rsize, 'singleQueryMaxMemorySize': single_msize}
+        updatecfgDict = {'queryUseMemoryPool':f'{use_mpool}','minReservedMemorySize': min_rsize, 'singleQueryMaxMemorySize': single_msize}
         tdDnodes.stop(1)
-        tdDnodes.deploy(1)
-        tdDnodes.start(1)
+        tdDnodes.deploy(1, updatecfgDict)
+        tdDnodes.starttaosd(1)
 
     def alter_cfg(self, use_mpool = 1, min_rsize = 0, single_msize = 0):
         tdSql.error(f"alter dnode 1 'queryUseMemoryPool' '{use_mpool}'")
@@ -83,8 +83,12 @@ class TDTestCase:
         self.variables_check(0, 0, 1024, 0)
 
         tdLog.info(f'[enable pool + up limit] start')
-        self.update_cfg(1, 1000000000, 1000000000)
-        self.variables_check(0, 1, 1000000000, 1000000000)
+        self.update_cfg(1, 1024, 1000000000)
+        self.variables_check(0, 1, 1024, 1000000000)
+
+        tdLog.info(f'[enable pool + reserve limit] start')
+        self.update_cfg(1, 1000000000, 3000)
+        self.variables_check(0, 1, 1000000000, 3000)
 
         tdLog.info(f'[enable pool + out of reserve] start')
         self.update_cfg(1, 1000000001)