diff --git a/pkg/statistics/handle/storage/stats_read_writer.go b/pkg/statistics/handle/storage/stats_read_writer.go
index 3d4d08ccaf975..03dbaa840fbae 100644
--- a/pkg/statistics/handle/storage/stats_read_writer.go
+++ b/pkg/statistics/handle/storage/stats_read_writer.go
@@ -652,7 +652,7 @@ func (s *statsReadWriter) loadStatsFromJSON(tableInfo *model.TableInfo, physical
 		// loadStatsFromJSON doesn't support partition table now.
 		// The table level count and modify_count would be overridden by the SaveMetaToStorage below, so we don't need
 		// to care about them here.
-		err = s.SaveStatsToStorage(tbl.PhysicalID, tbl.RealtimeCount, 0, 0, &col.Histogram, col.CMSketch, col.TopN, int(col.GetStatsVer()), 1, false, util.StatsMetaHistorySourceLoadStats)
+		err = s.SaveStatsToStorage(tbl.PhysicalID, tbl.RealtimeCount, 0, 0, &col.Histogram, col.CMSketch, col.TopN, int(col.GetStatsVer()), statistics.AnalyzeFlag, false, util.StatsMetaHistorySourceLoadStats)
 		if err != nil {
 			return errors.Trace(err)
 		}
@@ -661,7 +661,7 @@ func (s *statsReadWriter) loadStatsFromJSON(tableInfo *model.TableInfo, physical
 		// loadStatsFromJSON doesn't support partition table now.
 		// The table level count and modify_count would be overridden by the SaveMetaToStorage below, so we don't need
 		// to care about them here.
-		err = s.SaveStatsToStorage(tbl.PhysicalID, tbl.RealtimeCount, 0, 1, &idx.Histogram, idx.CMSketch, idx.TopN, int(idx.GetStatsVer()), 1, false, util.StatsMetaHistorySourceLoadStats)
+		err = s.SaveStatsToStorage(tbl.PhysicalID, tbl.RealtimeCount, 0, 1, &idx.Histogram, idx.CMSketch, idx.TopN, int(idx.GetStatsVer()), statistics.AnalyzeFlag, false, util.StatsMetaHistorySourceLoadStats)
 		if err != nil {
 			return errors.Trace(err)
 		}
diff --git a/pkg/statistics/histogram.go b/pkg/statistics/histogram.go
index 14c0ce816def4..c69eb18f3c08a 100644
--- a/pkg/statistics/histogram.go
+++ b/pkg/statistics/histogram.go
@@ -261,11 +261,6 @@ const (
 // AnalyzeFlag is set when the statistics comes from analyze.
 const AnalyzeFlag = 1
 
-// IsAnalyzed checks whether this flag contains AnalyzeFlag.
-func IsAnalyzed(flag int64) bool {
-	return (flag & AnalyzeFlag) > 0
-}
-
 // ValueToString converts a possible encoded value to a formatted string. If the value is encoded, then
 // idxCols equals to number of origin values, else idxCols is 0.
 func ValueToString(vars *variable.SessionVars, value *types.Datum, idxCols int, idxColumnTypes []byte) (string, error) {