diff --git a/ui/src/components/calendar/MultiModal.vue b/ui/src/components/calendar/MultiModal.vue
index a3825dd..81269ec 100644
--- a/ui/src/components/calendar/MultiModal.vue
+++ b/ui/src/components/calendar/MultiModal.vue
@@ -23,10 +23,16 @@ export default class extends Vue {
   public progress = false;
   public image_src = "";
 
-  public created() {
-    window.addEventListener("keydown", (e) => {
-      if (e.key == "Escape") this.set_active(false);
-    });
+  private on_keydown(e: KeyboardEvent) {
+    if (e.key == "Escape") this.set_active(false);
+  }
+
+  public mounted(): void {
+    window.addEventListener("keydown", this.on_keydown);
+  }
+
+  public beforeUnmount(): void {
+    window.removeEventListener("keydown", this.on_keydown);
   }
 
   public set_active(state: boolean) {