diff --git a/subiquity/server/ad_joiner.py b/subiquity/server/ad_joiner.py
index 48c90e28..f8dea630 100644
--- a/subiquity/server/ad_joiner.py
+++ b/subiquity/server/ad_joiner.py
@@ -28,7 +28,7 @@ log = logging.getLogger('subiquity.server.ad_joiner')
 
 class AdJoinStrategy():
     realm = "/usr/sbin/realm"
-    pam = "/usr/sbin/path-auth-update"
+    pam = "/usr/sbin/pam-auth-update"
 
     def __init__(self, app):
         self.app = app