diff --git a/gnu/services/slapd.scm b/gnu/services/slapd.scm
index a0eee8f..91b2dd4 100644
--- a/gnu/services/slapd.scm
+++ b/gnu/services/slapd.scm
@@ -128,10 +128,12 @@
                                                                      (slapd-configuration-openldap
                                                                       config)
                                                                      "/libexec/slapd")
-                                                               "-h"
-                                                               #$(slapd-configuration-uris config)
                                                                "-F"
                                                                "/var/lib/slapd/slapd.d"
+                                                               "-d"
+                                                               "-1"
+                                                               "-h"
+                                                               #$(slapd-configuration-uris config)
                                                                "-u"
                                                                "slapd"
                                                                "-g"