diff --git a/Runtime/Internal/BaseChart.cs b/Runtime/Internal/BaseChart.cs
index 193591f1..20d3e6f9 100644
--- a/Runtime/Internal/BaseChart.cs
+++ b/Runtime/Internal/BaseChart.cs
@@ -440,6 +440,7 @@ namespace XCharts
                 {
                     var serieData = serie.data[j];
                     serieData.index = j;
+                    serieData.labelObject = null;
                     AddSerieLabel(serie, serieData, count);
                     count++;
                 }