diff --git a/tpmcqr_service/api/utils.py b/tpmcqr_service/api/utils.py
index baa7538..e584da1 100644
--- a/tpmcqr_service/api/utils.py
+++ b/tpmcqr_service/api/utils.py
@@ -3,6 +3,7 @@ from tpmcqr_service import redis_client
 from tpmcqr_service.models.gtfs import QRDev, Shapes, Paraderos, Trips, Stops, find_shape_position
 import time
 import pickle
+import math
 
 def calcula_distancias_parada(redis_id, parada_id):
     salida_parada = dict()
@@ -86,7 +87,7 @@ def estima_llegada(parada_distance, expedicion):
     elif estimator > 0: #
         trip_info['trip_estimator'] = 'En parada'
     else: #
-        salida = ceil(estimator/60)
+        salida = math.ceil(estimator/60)
         trip_info['trip_estimator'] = 'Hace {} minutos'.format(salida)