diff --git a/src/views/spectrumAnalysis/gamma-analysis.vue b/src/views/spectrumAnalysis/gamma-analysis.vue
index 7422fdb..f94b7da 100644
--- a/src/views/spectrumAnalysis/gamma-analysis.vue
+++ b/src/views/spectrumAnalysis/gamma-analysis.vue
@@ -1206,12 +1206,9 @@ export default {
     },
 
     handleMouseUp() {
-      if (this.timer) {
-        window.clearTimeout(this.timer)
-      }
-      this.timer = setTimeout(() => {
+      this.$nextTick(() => {
         this.clearBrush()
-      }, 0)
+      })
     },
 
     clearBrush() {