diff --git a/store/tikv/gcworker/gc_worker.go b/store/tikv/gcworker/gc_worker.go
index 0386f39885..8fcaf64601 100644
--- a/store/tikv/gcworker/gc_worker.go
+++ b/store/tikv/gcworker/gc_worker.go
@@ -135,7 +135,7 @@ const (
 	gcScanLockModeKey      = "tikv_gc_scan_lock_mode"
 	gcScanLockModeLegacy   = "legacy"
 	gcScanLockModePhysical = "physical"
-	gcScanLockModeDefault  = gcScanLockModePhysical
+	gcScanLockModeDefault  = gcScanLockModeLegacy
 
 	gcAutoConcurrencyKey     = "tikv_gc_auto_concurrency"
 	gcDefaultAutoConcurrency = true
diff --git a/store/tikv/gcworker/gc_worker_test.go b/store/tikv/gcworker/gc_worker_test.go
index 1a5cb78bf2..009fda92c6 100644
--- a/store/tikv/gcworker/gc_worker_test.go
+++ b/store/tikv/gcworker/gc_worker_test.go
@@ -472,7 +472,7 @@ func (s *testGCWorkerSuite) TestCheckGCMode(c *C) {
 func (s *testGCWorkerSuite) TestCheckScanLockMode(c *C) {
 	usePhysical, err := s.gcWorker.checkUsePhysicalScanLock()
 	c.Assert(err, IsNil)
-	c.Assert(usePhysical, Equals, true)
+	c.Assert(usePhysical, Equals, false)
 	// This is a hidden config, so default value will not be inserted to table.
 	str, err := s.gcWorker.loadValueFromSysTable(gcScanLockModeKey)
 	c.Assert(err, IsNil)