diff --git a/cdc/tests/integration_tests/flow_control/run.sh b/cdc/tests/integration_tests/flow_control/run.sh
index 3b29b042..a434e021 100644
--- a/cdc/tests/integration_tests/flow_control/run.sh
+++ b/cdc/tests/integration_tests/flow_control/run.sh
@@ -69,7 +69,8 @@ EOF
 		fi
 	fi
 
-	check_sync_diff $WORK_DIR $UP_PD $DOWN_PD
+	# As "per-changefeed-memory-quota" is low the syncing will cost more time.
+	check_sync_diff $WORK_DIR $UP_PD $DOWN_PD 200
 
 	export GO_FAILPOINTS=''
 	cleanup_process $CDC_BINARY