diff --git a/TestGrid.md b/TestGrid.md
index 517068c..1965a47 100644
--- a/TestGrid.md
+++ b/TestGrid.md
@@ -24,4 +24,4 @@ Usage statistics are available for the public test grid.
  * average shares per file -- this hints at the number of nodes in the overall grid; If the number of hosts in the grid is less than 100, then shares_per_file should equal about 100/numhost ![](http://allmydata.org/tahoe-munin/tahoebs1.allmydata.com-tahoe_sharesperfile-month.png)  [/tahoe-munin/tahoebs1.allmydata.com-tahoe_sharesperfile.html other time scales]
 
  * total bytes consumed by all of the Tahoe test grid storage servers operated by Allmydata Inc.
-![](http://allmydata.org/tahoe-munin/tahoebs1.allmydata.com-tahoe_sharesperfile-month.png) [/tahoe-munin/tahoebs1.allmydata.com-tahoe_storagespace.html other time scales]
+![](http://allmydata.org/tahoe-munin/tahoebs1.allmydata.com-tahoe_storagespace-month.png) [/tahoe-munin/tahoebs1.allmydata.com-tahoe_storagespace.html other time scales]