diff --git a/executor/analyze.go b/executor/analyze.go
index 9c95df3397d29..144be79ec8525 100755
--- a/executor/analyze.go
+++ b/executor/analyze.go
@@ -687,7 +687,7 @@ func (e *AnalyzeFastExec) getNextSampleKey(bo *tikv.Backoffer, startKey kv.Key)
 		if err != nil {
 			return nil, err
 		}
-		if bytes.Compare(loc.StartKey, e.sampTasks[prefixLen].Location.EndKey) == 0 {
+		if bytes.Equal(loc.StartKey, e.sampTasks[prefixLen].Location.EndKey) {
 			startKey = loc.StartKey
 			break
 		}
diff --git a/executor/load_data.go b/executor/load_data.go
index 0f055b33bd396..36f090aea32d0 100644
--- a/executor/load_data.go
+++ b/executor/load_data.go
@@ -506,7 +506,7 @@ func (e *LoadDataInfo) getFieldsFromLine(line []byte) ([]field, error) {
 	for {
 		eol, f := reader.GetField()
 		f = f.escape()
-		if bytes.Compare(f.str, null) == 0 && !f.enclosed {
+		if bytes.Equal(f.str, null) && !f.enclosed {
 			f.str = []byte{'N'}
 			f.maybeNull = true
 		}
diff --git a/store/tikv/region_cache.go b/store/tikv/region_cache.go
index 36827778095e9..eda9a5260713d 100644
--- a/store/tikv/region_cache.go
+++ b/store/tikv/region_cache.go
@@ -650,7 +650,7 @@ func (c *RegionCache) loadRegion(bo *Backoffer, key []byte, isEndKey bool) (*Reg
 		if len(meta.Peers) == 0 {
 			return nil, errors.New("receive Region with no peer")
 		}
-		if isEndKey && !searchPrev && bytes.Compare(meta.StartKey, key) == 0 && len(meta.StartKey) != 0 {
+		if isEndKey && !searchPrev && bytes.Equal(meta.StartKey, key) && len(meta.StartKey) != 0 {
 			searchPrev = true
 			continue
 		}