2 files changed, 2 insertions, 2 deletions

diff --git a/src/jsUtils.ts b/src/jsUtils.ts
index ac7258644..f6a1df2fe 100644
--- a/src/jsUtils.ts
+++ b/src/jsUtils.ts
@@ -29,4 +29,4 @@ export const acceleratorString = (
   keyCombo: string,
   prefix: string = '(',
   suffix: string = ')',
-) => (index <= 10 ? `${prefix}${keyCombo}+${index % 10}${suffix}` : undefined);
+) => (index <= 10 ? `${prefix}${keyCombo}+${index % 10}${suffix}` : '');
diff --git a/test/jsUtils.test.ts b/test/jsUtils.test.ts
index 411ef28f9..ff7d29d77 100644
--- a/test/jsUtils.test.ts
+++ b/test/jsUtils.test.ts
@@ -146,7 +146,7 @@ describe('jsUtils', () => {
     });
 
     it('handles index = 11', () => {
-      expect(jsUtils.acceleratorString(11, 'abc')).toEqual(undefined);
+      expect(jsUtils.acceleratorString(11, 'abc')).toEqual('');
     });
   });
 });