diff --git a/servers/slapd/bconfig.c b/servers/slapd/bconfig.c
index 395fcd77e2..356ea66c85 100644
--- a/servers/slapd/bconfig.c
+++ b/servers/slapd/bconfig.c
@@ -320,7 +320,7 @@ static ConfigTable config_back_cf_table[] = {
 		&config_generic, "( OLcfgGlAt:7 NAME 'olcAuthzPolicy' "
 			"EQUALITY caseIgnoreMatch "
 			"SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
-	{ "authz-regexp", NULL, 3, 3, 0, ARG_MAGIC|CFG_AZREGEXP|ARG_NO_INSERT,
+	{ "authz-regexp", "regexp> <DN", 3, 3, 0, ARG_MAGIC|CFG_AZREGEXP|ARG_NO_INSERT,
 		&config_generic, "( OLcfgGlAt:8 NAME 'olcAuthzRegexp' "
 			"EQUALITY caseIgnoreMatch "
 			"SYNTAX OMsDirectoryString X-ORDERED 'VALUES' )", NULL, NULL },