diff --git a/scripts/gnt-instance b/scripts/gnt-instance
index 803036df3aa857dcca5597c69e70a9dd8b29427e..efa6809f888a62ee5bffe12498aab2a5b2938e7e 100755
--- a/scripts/gnt-instance
+++ b/scripts/gnt-instance
@@ -947,6 +947,7 @@ commands = {
 
 aliases = {
   'activate_block_devs': 'activate-disks',
+  'replace_disks': 'replace-disks',
   'start': 'startup',
   'stop': 'shutdown',
   }