diff --git a/src/iss-components/site-footer/site-footer.vue b/src/iss-components/site-footer/site-footer.vue
index f24b29d9..b3c7f203 100644
--- a/src/iss-components/site-footer/site-footer.vue
+++ b/src/iss-components/site-footer/site-footer.vue
@@ -86,9 +86,6 @@ export default {
     mounted() {
         this.paddingHeight = this.getFooterInfoBoxHeight() + 24;
     },
-    unmounted() {
-        document.onkeydown = null;
-    },
     methods: {
         onResize() {
             this.paddingHeight = this.getFooterInfoBoxHeight();