diff --git a/rowers/metrics.py b/rowers/metrics.py
index 2f5c12b9..1e7d55b1 100644
--- a/rowers/metrics.py
+++ b/rowers/metrics.py
@@ -285,7 +285,7 @@ axesnew = [
     (name,d['verbose_name'],d['ax_min'],d['ax_max'],d['type']) for name,d in rowingmetrics
     ]
     
-axes = tuple(axesnew+[('None','None',0,1,'basic')])
+axes = tuple(axesnew+[('None','<None>',0,1,'basic')])
 
 axlabels = {ax[0]:ax[1] for ax in axes}