diff --git a/br/tests/lightning_fail_fast/run.sh b/br/tests/lightning_fail_fast/run.sh
index caba9f39b48e5..a1723b3e2cffd 100755
--- a/br/tests/lightning_fail_fast/run.sh
+++ b/br/tests/lightning_fail_fast/run.sh
@@ -16,7 +16,7 @@
 
 set -eux
 
-export GO_FAILPOINTS='github.com/pingcap/tidb/br/pkg/lightning/restore/SlowDownWriteRows=sleep(50);github.com/pingcap/tidb/br/pkg/lightning/restore/SetMinDeliverBytes=return(1)'
+export GO_FAILPOINTS='github.com/pingcap/tidb/br/pkg/lightning/restore/SlowDownWriteRows=sleep(100);github.com/pingcap/tidb/br/pkg/lightning/restore/SetMinDeliverBytes=return(1)'
 
 for CFG in chunk engine; do
   rm -f "$TEST_DIR/lightning-tidb.log"
@@ -27,7 +27,8 @@ for CFG in chunk engine; do
 
   tail -n 10 $TEST_DIR/lightning-tidb.log | grep "ERROR" | tail -n 1 | grep -Fq "Error 1062: Duplicate entry '1-1' for key 'uq'"
 
-  grep -Fq "restore file failed" $TEST_DIR/lightning-tidb.log
+  ! grep -Fq "restore file completed" $TEST_DIR/lightning-tidb.log
+  [ $? -eq 0 ]
 
   ! grep -Fq "restore engine completed" $TEST_DIR/lightning-tidb.log
   [ $? -eq 0 ]