diff --git a/glicid/services/parallel.scm b/glicid/services/parallel.scm
index 028be1d..f99487b 100644
--- a/glicid/services/parallel.scm
+++ b/glicid/services/parallel.scm
@@ -36,17 +36,19 @@
                      munged-configuration?
                      (munge munge-configuration-munge (default munge))
                      (key-file munged-key-file (default (file-append munge "/etc/munge/munged.key")))
+                     (socket-path socket-path (default "/var/run/munge/munge.socket.1"))
                      (log-file munged-log-file (default "/var/log/munged.log")))
 
 (define munged-service
   (match-lambda
-    (($ <munged-configuration> munge key-file log-file)
+    (($ <munged-configuration> munge key-file socket-path log-file)
      (list (shepherd-service (provision '(munged))
                              (documentation "Run munged.")
                              (requirement '(user-processes))
                              (respawn? #t)
                              (start #~(make-forkexec-constructor (list #$(file-append munge "/sbin/munged")
-                                                                       "-F" "-f"
+                                                                       "-F" "-f" "-M"
+                                                                       "-S" #$socket-path
                                                                        "--key-file" #$key-file)
                                                                  #:log-file #$log-file))
                              (stop #~(make-kill-destructor)))))))
@@ -76,7 +78,7 @@
     (group "slurm")
     (system? #t)
     (comment "slurm server user")
-    (uid 721) ;«magic number…»
+    (uid 567) ;«magic number…»
     (home-directory "/var/spool/slurm")
     (shell (file-append bash "/bin/bash"))))