diff --git a/kv/transaction/commands4b_test.go b/kv/transaction/commands4b_test.go
index 5ddf2d4e..5b3fccf2 100644
--- a/kv/transaction/commands4b_test.go
+++ b/kv/transaction/commands4b_test.go
@@ -541,7 +541,7 @@ func TestCommitConflictRace4B(t *testing.T) {
 	})
 	resp := builder.runOneRequest(cmd).(*kvrpcpb.CommitResponse)
 
-	assert.NotNil(t, resp.Error.Retryable)
+	assert.NotEmpty(t, resp.Error.Retryable)
 	assert.Nil(t, resp.RegionError)
 	builder.assertLens(1, 1, 0)
 	builder.assert([]kv{