diff --git a/glicid/services/parallel.scm b/glicid/services/parallel.scm
index bb28514..58b53e4 100644
--- a/glicid/services/parallel.scm
+++ b/glicid/services/parallel.scm
@@ -37,7 +37,7 @@
                      (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.2"))
-                     (threads numthreads (default 2))
+                     (numthreads numthreads (default "2"))
                      (log-file munged-log-file (default "/var/log/munged.log")))
 
 (define munged-service
@@ -51,7 +51,7 @@
                                                                        "-F" "-f" "-M"
                                                                        "-S" #$socket-path
                                                                        "--key-file" #$key-file
-                                                                       "--num-threads" #$threads)
+                                                                       "--num-threads" #$numthreads)
                                                                  #:log-file #$log-file))
                              (stop #~(make-kill-destructor)))))))