diff --git a/.gitignore b/.gitignore
index a641a4d88..7637e636d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,10 +15,11 @@ dist/
 
 # IDE
 .vscode/
+.idea
 
 # Environment files
 .env
 
 # Cypress Video and Screenshots output
 cypress/screenshots/
-cypress/videos/
\ No newline at end of file
+cypress/videos/
diff --git a/packages/docsearch-react/src/useDocSearchKeyboardEvents.ts b/packages/docsearch-react/src/useDocSearchKeyboardEvents.ts
index 0e660eb99..a23aab1cd 100644
--- a/packages/docsearch-react/src/useDocSearchKeyboardEvents.ts
+++ b/packages/docsearch-react/src/useDocSearchKeyboardEvents.ts
@@ -39,7 +39,11 @@ export function useDocSearchKeyboardEvents({
       if (
         (event.keyCode === 27 && isOpen) ||
         // The `Cmd+K` shortcut both opens and closes the modal.
-        (event.key.toLowerCase() === 'k' && (event.metaKey || event.ctrlKey)) ||
+        // We need to check for `event.key` because it can be `undefined` with
+        // Chrome's autofill feature.
+        // See https://github.com/paperjs/paper.js/issues/1398
+        (event.key?.toLowerCase() === 'k' &&
+          (event.metaKey || event.ctrlKey)) ||
         // The `/` shortcut opens but doesn't close the modal because it's
         // a character.
         (!isEditingContent(event) && event.key === '/' && !isOpen)