diff --git a/plugins/mongodb/mongo_mem b/plugins/mongodb/mongo_mem
index 61dafeb9..f4a041bb 100755
--- a/plugins/mongodb/mongo_mem
+++ b/plugins/mongodb/mongo_mem
@@ -70,7 +70,7 @@ def doConfig():
 graph_title MongoDB memory usage
 graph_args --base 1024 -l 0 --vertical-label Bytes
 graph_category %s
-""" % os.getenv('graph_category', 'mongodb'))
+""" % os.getenv('graph_category', 'db'))
 
     for k in getServerStatus()["mem"]:
         if ok( k ):