diff --git a/__tests__/lib/strings/url-helpers.test.ts b/__tests__/lib/strings/url-helpers.test.ts
index 2669570645..606bb6b3f1 100644
--- a/__tests__/lib/strings/url-helpers.test.ts
+++ b/__tests__/lib/strings/url-helpers.test.ts
@@ -146,7 +146,8 @@ describe('splitApexDomain', () => {
 })
 
 describe('isTrustedUrl', () => {
-  const cases = [
+  type Case = [string, boolean]
+  const cases: Case[] = [
     ['#', true],
     ['#profile', true],
     ['/', true],
@@ -171,7 +172,7 @@ describe('isTrustedUrl', () => {
     ['https://docs.google.com', false],
     ['https://google.com/#', false],
     ['https://blueskywebxzendesk.com', false],
-  ] as [string, boolean][]
+  ]
 
   it.each(cases)('given input uri %p, returns %p', (str, expected) => {
     const output = isTrustedUrl(str)