diff --git a/stacktach/urls.py b/stacktach/urls.py
index 072cb4c..3670d30 100644
--- a/stacktach/urls.py
+++ b/stacktach/urls.py
@@ -20,7 +20,7 @@ urlpatterns = patterns('',
     url(r'stacky/watch/(?P<deployment_id>\d+)/$',
                                         'stacktach.stacky_server.do_watch'),
     url(r'stacky/kpi/$', 'stacktach.stacky_server.do_kpi'),
-    url(r'stacky/kpi/(?P<tenant_id>\d+)/$', 'stacktach.stacky_server.do_kpi'),
+    url(r'stacky/kpi/(?P<tenant_id>\w+)/$', 'stacktach.stacky_server.do_kpi'),
     url(r'stacky/usage/launches/$',
         'stacktach.stacky_server.do_list_usage_launches'),
     url(r'stacky/usage/deletes/$',