diff --git a/src/views/spectrumAnalysis/components/RoiLimits.vue b/src/views/spectrumAnalysis/components/RoiLimits.vue
index 44ffac9..c974f14 100644
--- a/src/views/spectrumAnalysis/components/RoiLimits.vue
+++ b/src/views/spectrumAnalysis/components/RoiLimits.vue
@@ -104,6 +104,7 @@ export default {
     ROILists: {
       handler(newVal) {
         this.active = 0
+        this.$emit('sendIndex', 0)
         const [ROIOneList, ...lists] = newVal
         this.buildOneLineList(ROIOneList)
       },