diff --git a/web/src/keydown_util.ts b/web/src/keydown_util.ts
index 310728c644..8eb0dabae0 100644
--- a/web/src/keydown_util.ts
+++ b/web/src/keydown_util.ts
@@ -30,7 +30,7 @@ export function handle(opts: {
     });
 }
 
-export function is_enter_event(event: JQuery.KeyDownEvent): boolean {
+export function is_enter_event(event: JQuery.KeyDownEvent | JQuery.KeyUpEvent): boolean {
     // In addition to checking whether the key pressed was an Enter
     // key, we need to check whether the keypress was part of an IME
     // composing session, such as selecting a character using a