diff --git a/packages/client/src/os.ts b/packages/client/src/os.ts
index 1f700e93d..0a7aa23fb 100644
--- a/packages/client/src/os.ts
+++ b/packages/client/src/os.ts
@@ -103,7 +103,7 @@ export const apiWithDialog = ((
 	promiseDialog(promise, null, (err) => {
 		alert({
 			type: 'error',
-			text: err.message + '\n' + (err as any).id,
+			text: (err.message + '\n' + (err?.endpoint ?? '') + (err?.code ?? '')).trim(),
 		});
 	});
 
@@ -141,7 +141,7 @@ export function promiseDialog<T extends Promise<any>>(
 		}
 	});
 
-	// NOTE: dynamic importすると挙動がおかしくなる(showingの変更が伝播しない)
+	// NOTE: dynamic import results in strange behaviour (showing is not reactive)
 	popup(MkWaitingDialog, {
 		success,
 		showing,