diff --git a/oj/urls.py b/oj/urls.py
index 08937c4..e58d370 100644
--- a/oj/urls.py
+++ b/oj/urls.py
@@ -88,7 +88,6 @@ urlpatterns = [
     url(r'^contest/(?P<contest_id>\d+)/$', "contest.views.contest_page", name="contest_page"),
 
 
-    url(r'^problem/(?P<problem_id>\d+)/$', "problem.views.problem_page", name="problem_page"),
     url(r'^problem/(?P<problem_id>\d+)/$', "problem.views.problem_page", name="problem_page"),
     url(r'^problems/$', "problem.views.problem_list_page", name="problem_list_page"),
     url(r'^problems/(?P<page>\d+)/$', "problem.views.problem_list_page", name="problem_list_page"),