diff --git a/core/frontend/src/views/chart/group/Group.vue b/core/frontend/src/views/chart/group/Group.vue
index 96ef3276bd..27726a23e5 100644
--- a/core/frontend/src/views/chart/group/Group.vue
+++ b/core/frontend/src/views/chart/group/Group.vue
@@ -1046,7 +1046,7 @@ export default {
       view.yaxis = JSON.stringify([])
       view.yaxisExt = JSON.stringify([])
       view.extStack = JSON.stringify([])
-      view.customFilter = JSON.stringify([])
+      view.customFilter = JSON.stringify({})
       view.drillFields = JSON.stringify([])
       view.extBubble = JSON.stringify([])
       view.viewFields = JSON.stringify([])