diff --git a/ceph-osd-class-set b/ceph-osd-class-set
index 5f2e69b..ddf8a4d 100755
--- a/ceph-osd-class-set
+++ b/ceph-osd-class-set
@@ -1,12 +1,11 @@
 #!/bin/sh
 
 if [ $# -ne 2 ]; then
-    echo "$0: class-name osd-name" >&2
+    echo "$0: class-name osd-name [..osd name]" >&2
     echo "Set device class for OSD (needs to be classless before)"
     exit 1
 fi
 
 osd=$1; shift
-class=$1; shift
 
-ceph osd crush set-device-class "$class" "$osd"
+ceph osd crush set-device-class "$class" "$@"