diff --git a/amadeus/reference_data/locations/hotels/_by_hotels.py b/amadeus/reference_data/locations/hotels/_by_hotels.py
index 07d185ab..cc9b2742 100644
--- a/amadeus/reference_data/locations/hotels/_by_hotels.py
+++ b/amadeus/reference_data/locations/hotels/_by_hotels.py
@@ -18,5 +18,8 @@ def get(self, **params):
         :rtype: amadeus.Response
         :raises amadeus.ResponseError: if the request could not be completed
         '''
+        for key, value in params.items():
+            if isinstance(value, list):
+                params[key] = ','.join(value)
         return self.client.get(
             '/v1/reference-data/locations/hotels/by-hotels', **params)
diff --git a/specs/namespaces/test_namespaces.py b/specs/namespaces/test_namespaces.py
index 577956d8..605ddf0c 100644
--- a/specs/namespaces/test_namespaces.py
+++ b/specs/namespaces/test_namespaces.py
@@ -497,9 +497,10 @@ def test_analytics_itinerary_price_metrics_get(client_setup):
 
 
 def test_reference_data_locations_hotels_by_hotels_get(client_setup):
-    client_setup.reference_data.locations.hotels.by_hotels.get(a='b')
+    client_setup.reference_data.locations.hotels.by_hotels.get(a='b',
+                                                               c=['d', 'e'])
     client_setup.get.assert_called_with(
-        '/v1/reference-data/locations/hotels/by-hotels', a='b'
+        '/v1/reference-data/locations/hotels/by-hotels', a='b', c='d,e'
     )