diff --git a/src/components/emoji_picker/emoji_picker.js b/src/components/emoji_picker/emoji_picker.js
index edcb8242..49438a4b 100644
--- a/src/components/emoji_picker/emoji_picker.js
+++ b/src/components/emoji_picker/emoji_picker.js
@@ -173,8 +173,8 @@ const EmojiPicker = {
       const emojiPacks = []
       customEmojis.forEach((pack, id) => {
         emojiPacks.push({
-          id: id.substring(5),
-          text: startCase(id.substring(5)),
+          id: id.replace(/^pack:/, ''),
+          text: startCase(id.replace(/^pack:/, '')),
           first: pack[0],
           emojis: this.filterByKeyword(pack)
         })