diff --git a/src/components/SideBar.vue b/src/components/SideBar.vue
index 5a195e41..87f223db 100644
--- a/src/components/SideBar.vue
+++ b/src/components/SideBar.vue
@@ -114,6 +114,10 @@ export default {
     }
   },
   methods: {
+    /**
+     * This event is emitted when the mouse hover are changed.
+     * @arg data
+     */
     hoverChanged: function (data) {
       this.$emit('hover-changed', data)
     },