diff --git a/tests/helpers/expectations.ts b/tests/helpers/expectations.ts
index e50811fd4d..2a95e2b635 100644
--- a/tests/helpers/expectations.ts
+++ b/tests/helpers/expectations.ts
@@ -12,6 +12,7 @@ const defaultExpectations = {
          * null -> if the config is enabled, assert the UI elements are displayed and the feature works.
          */
         enabled: null,
+        minPinLength: 8
     },
     iframe: {
         // Whether the iframe integration is enabled (the inverse of `disableIframeAPI` from config.js)
diff --git a/tests/specs/misc/dialIn.spec.ts b/tests/specs/misc/dialIn.spec.ts
index aa08da3f20..f1cb4b31a9 100644
--- a/tests/specs/misc/dialIn.spec.ts
+++ b/tests/specs/misc/dialIn.spec.ts
@@ -92,7 +92,10 @@ describe('Dial-in', () => {
             throw new Error('no pin');
         }
 
-        expect(dialInPin.length >= 8).toBe(true);
+        if (!dialInPin.match(/^[0-9]+$/)) {
+            throw new Error(`The dial-in PIN contains non-digit characters: ${dialInPin}`);
+        }
+        expect(dialInPin.length).toBeGreaterThanOrEqual(expectations.dialIn.minPinLength);
     });
 
     it('skip the rest if a dial-in URL is not configured', async () => {