diff --git a/client/test/expected/25_exception_safe_private_functions_test.out b/client/test/expected/25_exception_safe_private_functions_test.out
index 01b79ed..de19bd2 100644
--- a/client/test/expected/25_exception_safe_private_functions_test.out
+++ b/client/test/expected/25_exception_safe_private_functions_test.out
@@ -1,5 +1,6 @@
+SET client_min_messages TO warning;
 SET search_path TO public,cartodb,cdb_dataservices_client;
--- Mock the server function to fail
+-- Mock the server functions to raise exceptions
 CREATE OR REPLACE FUNCTION cdb_dataservices_server.cdb_geocode_street_point (username text, orgname text, searchtext text, city text DEFAULT NULL, state_province text DEFAULT NULL, country text DEFAULT NULL)
 RETURNS Geometry AS $$
 BEGIN
@@ -7,9 +8,15 @@ BEGIN
   RETURN NULL;
 END;
 $$ LANGUAGE 'plpgsql';
+CREATE OR REPLACE FUNCTION cdb_dataservices_server.cdb_isodistance(username text, orgname text, source geometry, mode text, range integer[], options text[] DEFAULT ARRAY[]::text[])
+RETURNS SETOF isoline AS $$
+BEGIN
+  RAISE EXCEPTION 'Not enough quota or any other exception whatsoever.';
+END;
+$$ LANGUAGE 'plpgsql';
 -- Use regular user role
 SET ROLE test_regular_user;
--- Exercise the public and the proxied function
+-- Exercise the exception safe and the proxied functions
 SELECT _cdb_geocode_street_point_exception_safe('One street, 1');
 WARNING:  cdb_dataservices_client._cdb_geocode_street_point(6): [contrib_regression] REMOTE ERROR: Not enough quota or any other exception whatsoever.
 DETAIL:  SQL statement "SELECT cdb_dataservices_client._cdb_geocode_street_point(username, orgname, searchtext, city, state_province, country)"
@@ -19,3 +26,10 @@ PL/pgSQL function _cdb_geocode_street_point_exception_safe(text,text,text,text)
  
 (1 row)
 
+SELECT the_geom FROM _cdb_isodistance_exception_safe('POINT(-3.70568 40.42028)'::geometry, 'walk', ARRAY[300]::integer[]);
+WARNING:  cdb_dataservices_client._cdb_isodistance(6): [contrib_regression] REMOTE ERROR: Not enough quota or any other exception whatsoever.
+DETAIL:  PL/pgSQL function _cdb_isodistance_exception_safe(geometry,text,integer[],text[]) line 21 at RETURN QUERY
+ the_geom 
+----------
+(0 rows)
+
diff --git a/client/test/sql/25_exception_safe_private_functions_test.sql b/client/test/sql/25_exception_safe_private_functions_test.sql
index c5a1831..c48a465 100644
--- a/client/test/sql/25_exception_safe_private_functions_test.sql
+++ b/client/test/sql/25_exception_safe_private_functions_test.sql
@@ -1,6 +1,7 @@
+SET client_min_messages TO warning;
 SET search_path TO public,cartodb,cdb_dataservices_client;
 
--- Mock the server function to fail
+-- Mock the server functions to raise exceptions
 CREATE OR REPLACE FUNCTION cdb_dataservices_server.cdb_geocode_street_point (username text, orgname text, searchtext text, city text DEFAULT NULL, state_province text DEFAULT NULL, country text DEFAULT NULL)
 RETURNS Geometry AS $$
 BEGIN
@@ -9,8 +10,17 @@ BEGIN
 END;
 $$ LANGUAGE 'plpgsql';
 
+CREATE OR REPLACE FUNCTION cdb_dataservices_server.cdb_isodistance(username text, orgname text, source geometry, mode text, range integer[], options text[] DEFAULT ARRAY[]::text[])
+RETURNS SETOF isoline AS $$
+BEGIN
+  RAISE EXCEPTION 'Not enough quota or any other exception whatsoever.';
+END;
+$$ LANGUAGE 'plpgsql';
+
+
 -- Use regular user role
 SET ROLE test_regular_user;
 
--- Exercise the public and the proxied function
+-- Exercise the exception safe and the proxied functions
 SELECT _cdb_geocode_street_point_exception_safe('One street, 1');
+SELECT the_geom FROM _cdb_isodistance_exception_safe('POINT(-3.70568 40.42028)'::geometry, 'walk', ARRAY[300]::integer[]);