diff --git a/rowers/views/racesviews.py b/rowers/views/racesviews.py
index 6eda67e8..006de323 100644
--- a/rowers/views/racesviews.py
+++ b/rowers/views/racesviews.py
@@ -122,6 +122,8 @@ def courses_view(request):
 
         except KeyError:
             pass
+        except ValueError:
+            pass
             
 
     ip = request.META.get('HTTP_X_REAL_IP', '1.1.1.1')