diff --git a/test/spec/adUnits_spec.js b/test/spec/adUnits_spec.js
index 01a4c4cd441..f15ba41eb23 100644
--- a/test/spec/adUnits_spec.js
+++ b/test/spec/adUnits_spec.js
@@ -82,12 +82,12 @@ describe('Publisher API _ AdUnits', function () {
       assert.strictEqual(bids2[1].params.placementId, '827326', 'adUnit2 bids2 params.placementId');
     });
 
-    it('both add unit should contains a transactionid.'), function() {
-      assert.exist(adUnit1.transationId)
-      assert.exist(adUnit2.transationId)
+    it('both add unit should contains a transactionId', function() {
+      assert.isString(adUnit1.transactionId);
+      assert.isString(adUnit2.transactionId);
 
-      assert.strictEqual(false, adUnit1.transationId === adUnit2.transationId)
-    }
+      assert.strictEqual(false, adUnit1.transactionId === adUnit2.transactionId);
+    });
 
     it('the second adUnits value should be same with the adUnits that is added by $$PREBID_GLOBAL$$.addAdUnits();', function () {
       assert.strictEqual(adUnit2.code, '/1996833/slot-2', 'adUnit2 code');