diff --git a/rowers/templatetags/rowerfilters.py b/rowers/templatetags/rowerfilters.py
index efb5862e..77eb7a12 100644
--- a/rowers/templatetags/rowerfilters.py
+++ b/rowers/templatetags/rowerfilters.py
@@ -61,7 +61,7 @@ def usermessages(rower):
     try:
         msgs = UserMessage.objects.filter(receiver=rower, isread=False)
         return msgs.count()
-    except UserMessage.DoesNotExist:
+    except (UserMessage.DoesNotExist, ValueError):
         pass
 
     return 0
diff --git a/rowers/tests/testdata/testdata.tcx.gz b/rowers/tests/testdata/testdata.tcx.gz
index 91984fde..0e0d46bf 100644
Binary files a/rowers/tests/testdata/testdata.tcx.gz and b/rowers/tests/testdata/testdata.tcx.gz differ