diff --git a/visits/admin.py b/visits/admin.py
index 9bead9037045a27b96881254d48edc714878a6a0..92bcbb60dfcb54750ebc72d22b3103f83f22bd62 100644
--- a/visits/admin.py
+++ b/visits/admin.py
@@ -3,6 +3,7 @@
 from django import forms
 from django.contrib import admin, messages
 from django.template.defaultfilters import pluralize
+from django.core import urlresolvers
 
 from .models import Participation, Place, Visit