diff --git a/internal/locate/region_request3_test.go b/internal/locate/region_request3_test.go
index 9defcb03a..b75c75094 100644
--- a/internal/locate/region_request3_test.go
+++ b/internal/locate/region_request3_test.go
@@ -606,7 +606,8 @@ func (s *testRegionRequestToThreeStoresSuite) TestReplicaSelector() {
 	replicaSelector, err = newReplicaSelector(cache, regionLoc.Region, req)
 	s.NotNil(replicaSelector)
 	s.Nil(err)
-	state3 = replicaSelector.state.(*accessFollower)
+	_, ok = replicaSelector.state.(*accessFollower)
+	s.True(ok)
 	// Should fallback to the leader immediately.
 	rpcCtx, err = replicaSelector.next(s.bo)
 	s.Nil(err)