diff --git a/glicid/services/authentication.scm b/glicid/services/authentication.scm
index a37246b..9da0a7c 100644
--- a/glicid/services/authentication.scm
+++ b/glicid/services/authentication.scm
@@ -27,9 +27,7 @@
 
 (define sssd-shepherd-service
   (match-lambda
-    (($
-       <sssd-configuration> pkg pid-file config-file logger debug-level log-file
-       )
+    (($ <sssd-configuration> sssd-pkg pid-file config-file logger debug-level log-file)
      (list
        (shepherd-service
          (provision '(slapd))
@@ -38,7 +36,7 @@
          (respawn? #t)
          (start #~(make-forkexec-constructor
                     (list
-                      #$(file-append pkg "/sbin/sssd")
+                      #$(file-append sssd-pkg "/sbin/sssd")
                       "-i"
                       "-c" #$config-file
                       "--logger" #$logger