diff --git a/lib/cartodb/carto_data.js b/lib/cartodb/carto_data.js
index 5ad4723c..83b9933b 100644
--- a/lib/cartodb/carto_data.js
+++ b/lib/cartodb/carto_data.js
@@ -232,8 +232,7 @@ module.exports = function() {
                 redisClient[redisFunc.toUpperCase()].apply(redisClient, redisArgs);
             },
             function releaseRedisClient(err, data) {
-                if (err) throw err;
-                redis_pool.release(db, redisClient);
+                if ( ! _.isUndefined(redisClient) ) redis_pool.release(db, redisClient);
                 callback(err, data);
             }
         );