diff --git a/rowers/views/importviews.py b/rowers/views/importviews.py
index f5270e17..3786cf10 100644
--- a/rowers/views/importviews.py
+++ b/rowers/views/importviews.py
@@ -83,6 +83,8 @@ def rower_integration_authorize(request, source='c2'): # pragma: no cover
             return rower_rojabo_authorize(request)
         if source == 'polar':
             return rower_polar_authorize(request)
+        else:
+            raise Http404("Page Not Found")
     url = integration.make_authorization_url()
     return HttpResponseRedirect(url)