diff --git a/tests/test_tiingo.py b/tests/test_tiingo.py
index e238052..ed1cf8d 100644
--- a/tests/test_tiingo.py
+++ b/tests/test_tiingo.py
@@ -90,16 +90,19 @@ class TestNews(TestCase):
 
     def test_get_news_articles(self):
         """Confirm that news article work"""
+        NUM_ARTICLES = 10
+
         search_params = {
             "tickers": ["aapl", "googl"],
             "tags": ["Technology", "Bitcoin"],
             "startDate": "2016-01-01",
             "endDate": "2017-08-31",
             "sources": ['washingtonpost.com', 'altcointoday.com'],
-            "limit": 10
+            "limit": NUM_ARTICLES
         }
 
         articles = self._client.get_news(**search_params)
+        assert len(articles) == NUM_ARTICLES
         for article in articles:
             assert all(key in article for key in self.article_keys)
 
diff --git a/tiingo/api.py b/tiingo/api.py
index 0019980..a41e5a9 100644
--- a/tiingo/api.py
+++ b/tiingo/api.py
@@ -109,22 +109,13 @@ class TiingoClient(RestClient):
         params = {
             'limit': limit,
             'offset': offset,
-            'sortBy': sortBy
+            'sortBy': sortBy,
+            'tickers': tickers,
+            'sources': sources,
+            'tags': tags,
+            'startDate': startDate,
+            'endDate': endDate
         }
-
-        # TBD: whether these commas are necessary if just pass list instead
-        if tickers:
-            params['tickers'] = ",".join(tickers)
-        if tags:
-            params['tags'] = ",".join(tags)
-        if sources:
-            params['sources'] = ",".join(sources)
-
-        if startDate:
-            params['startDate'] = startDate
-        if endDate:
-            params['endDate'] = endDate
-
         response = self._request('GET', url, params=params)
         return response.json()