diff --git a/tests/test_tiingo.py b/tests/test_tiingo.py
index 2cf4c65..6a6f5cc 100644
--- a/tests/test_tiingo.py
+++ b/tests/test_tiingo.py
@@ -100,7 +100,7 @@ class TestTickerPrices(TestCase):
 
     @vcr.use_cassette('tests/fixtures/ticker_price_with_volume_column.yaml')
     def test_ticker_price_with_volume_column(self):
-        """Confirm that CSV endpoint works"""
+        """Confirm that requesting a single column works"""
         prices = self._client.get_ticker_price("GOOGL",
                                                columns="volume",
                                                fmt='json')
@@ -114,7 +114,7 @@ class TestTickerPrices(TestCase):
 
     @vcr.use_cassette('tests/fixtures/ticker_price_with_multiple_columns.yaml')
     def test_ticker_price_with_multiple_columns(self):
-        """Confirm that CSV endpoint works"""
+        """Confirm that requesting specific columns works"""
         prices = self._client.get_ticker_price("GOOGL",
                                                columns="open,high,low,close,volume",
                                                fmt='json')
diff --git a/tests/test_tiingo_pandas.py b/tests/test_tiingo_pandas.py
index da7b9d4..8c24ce7 100644
--- a/tests/test_tiingo_pandas.py
+++ b/tests/test_tiingo_pandas.py
@@ -116,21 +116,23 @@ class TestTiingoWithPython(TestCase):
 
     @vcr.use_cassette('tests/fixtures/ticker_price_with_volume_column.yaml')
     def test_get_dataframe_with_volume_column(self):
-        """Confirm that CSV endpoint works"""
+        """Confirm that requesting a single column works"""
+        requested_column = "volume"
         prices = self._client.get_dataframe("GOOGL",
-                                               columns="volume",
+                                               columns=requested_column,
                                                fmt='json')
         assert len(prices) == 1
-        assert len(prices.columns) == 2
+        assert len(prices.columns) == len(requested_column) + 1
 
     @vcr.use_cassette('tests/fixtures/ticker_price_with_multiple_columns.yaml')
     def test_get_dataframe_with_multiple_columns(self):
-        """Confirm that CSV endpoint works"""
+        """Confirm that requesting specific columns works"""
+        requested_columns = "open,high,low,close,volume"
         prices = self._client.get_dataframe("GOOGL",
-                                               columns="open,high,low,close,volume",
+                                               columns=requested_columns,
                                                fmt='json')
         assert len(prices) == 1
-        assert len(prices.columns) == 6
+        assert len(prices.columns) == len(requested_columns.split(",")) + 1
 
     def test_metric_name_column_error(self):
         with self.assertRaises(APIColumnNameError):