diff --git a/src/ZenGlanceManager.mjs b/src/ZenGlanceManager.mjs
index 8f1c37e..668559a 100644
--- a/src/ZenGlanceManager.mjs
+++ b/src/ZenGlanceManager.mjs
@@ -65,7 +65,7 @@
     }
 
     onKeyDown(event) {
-      if (event.key === "Escape") {
+      if (event.key === "Escape" && this.#currentBrowser) {
         this.closeGlance();
       }
     }