diff --git a/glicid/services/parallel.scm b/glicid/services/parallel.scm
index a410e58..57a9534 100644
--- a/glicid/services/parallel.scm
+++ b/glicid/services/parallel.scm
@@ -71,6 +71,7 @@
 (define %slurm-group
   (user-group
     (name "slurm")
+    (id 567)
     (system? #t)))
 (define %slurm-account
   (user-account
@@ -79,7 +80,7 @@
     (system? #t)
     (comment "slurm server user")
     (uid 567) ;«magic number…»
-    (group 567) ;«magic number…»
+   ; (group 567) ;«magic number…»
     (home-directory "/var/spool/slurm")
     (shell (file-append bash "/bin/bash"))))