diff --git a/Performance.md b/Performance.md
index 74bdb56..2575b0f 100644
--- a/Performance.md
+++ b/Performance.md
@@ -13,7 +13,7 @@ consumption occurs when the file is a few MB in size and does not grow beyond
 that). Uploading multiple files at once would increase this.
 
 We also have a
-[64-bit graph](http://allmydata.org/tahoe-figleaf-graph/hanford.allmydata.com-tahoe_memstats.html), which currently shows a disturbingly large static footprint.
+[64-bit graph](http://allmydata.org/tahoe-figleaf-graph/hanford.allmydata.com-tahoe_memstats_64.html), which currently shows a disturbingly large static footprint.
 We've determined that simply importing a few of our support libraries (such
 as Twisted) results in most of this expansion, before the node is ever even
 started. The cause for this is still being investigated: we can think of plenty