diff --git a/server/lib/python/cartodb_services/cartodb_services/here/routing.py b/server/lib/python/cartodb_services/cartodb_services/here/routing.py
index 87c0e60..0adc519 100644
--- a/server/lib/python/cartodb_services/cartodb_services/here/routing.py
+++ b/server/lib/python/cartodb_services/cartodb_services/here/routing.py
@@ -56,7 +56,8 @@ class HereMapsRoutingIsoline(Traceable):
                                          options)
 
     def __calculate_isolines(self, source, mode, data_range, range_type,
-                             options=[]):
+                             options=None):
+        options = [] if options is None else options
         parsed_options = self.__parse_options(options)
         source_param = self.__parse_source_param(source, parsed_options)
         mode_param = self.__parse_mode_param(mode, parsed_options)
diff --git a/server/lib/python/cartodb_services/cartodb_services/here/types.py b/server/lib/python/cartodb_services/cartodb_services/here/types.py
index fa7f612..25eb936 100644
--- a/server/lib/python/cartodb_services/cartodb_services/here/types.py
+++ b/server/lib/python/cartodb_services/cartodb_services/here/types.py
@@ -11,7 +11,10 @@ def geo_polyline_to_multipolygon(polyline):
     else:
         coordinates = []
         for point in polyline:
-            lat, lon = point.split(',')
+            if isinstance(point, tuple):
+                lat, lon = point
+            else:
+                lat, lon = point.split(',') 
             coordinates.append("%s %s" % (lon, lat))
         wkt_coordinates = ','.join(coordinates)