diff --git a/servers/slapd/config.c b/servers/slapd/config.c
index e2d2f8da7a..a674effd1e 100644
--- a/servers/slapd/config.c
+++ b/servers/slapd/config.c
@@ -190,7 +190,7 @@ ConfigTable SystemConfiguration[] = {
   { "sizelimit",		2,  2,  0,  "limit",	ARG_MAGIC|CFG_SIZE,	&config_sizelimit,		NULL, NULL, NULL },
   { "timelimit",		2,  2,  0,  "limit",	ARG_MAGIC|CFG_TIME,	&config_timelimit,		NULL, NULL, NULL },
   { "limits",			2,  2,  0,  "limits",	ARG_DB|ARG_MAGIC|CFG_LIMITS, &config_generic,		NULL, NULL, NULL },
-  { "subordinate",		2,  2,  0,  "sub",	ARG_DB|ARG_MAGIC|CFG_SUB, &config_generic,		NULL, NULL, NULL },
+  { "subordinate",		1,  1,  0,  "sub",	ARG_DB|ARG_MAGIC|CFG_SUB, &config_generic,		NULL, NULL, NULL },
   { "overlay",			2,  2,  0,  "overlay",	ARG_DB|ARG_MAGIC,	&config_overlay,		NULL, NULL, NULL },
   { "suffix",			2,  2,  0,  "suffix",	ARG_DB|ARG_MAGIC,	&config_suffix,			NULL, NULL, NULL },
   { "maxDerefDepth",		2,  2,  0,  "depth",	ARG_DB|ARG_INT|ARG_MAGIC|CFG_DEPTH, &config_generic,	NULL, NULL, NULL },