diff --git a/lib/assets/javascripts/utils/panelHeading.js b/lib/assets/javascripts/utils/panelHeading.js
index 194657f..670c048 100644
--- a/lib/assets/javascripts/utils/panelHeading.js
+++ b/lib/assets/javascripts/utils/panelHeading.js
@@ -1,5 +1,8 @@
 $(() => {
   $('.heading-button').on('click', (e) => {
-    $(e.currentTarget).find('i.fa').toggleClass('fa-plus').toggleClass('fa-minus');
+    $(e.currentTarget)
+      .find('i.fa-plus, i.fa-minus')
+      .toggleClass('fa-plus')
+      .toggleClass('fa-minus');
   });
 });