diff --git a/misc/munin/tahoe-nodememory.py b/misc/munin/tahoe-nodememory.py
index 0e62e7d7d..670e32e53 100644
--- a/misc/munin/tahoe-nodememory.py
+++ b/misc/munin/tahoe-nodememory.py
@@ -34,7 +34,7 @@ if len(sys.argv) > 1:
         configinfo = \
         """graph_title Memory Consumed by Nodes
 graph_vlabel bytes
-graph_category allmydata
+graph_category Tahoe
 graph_info This graph shows the memory used by specific processes
 """
         for nodename,nodedir in nodedirs: