diff --git a/net/wsdd2/files/wsdd2.init b/net/wsdd2/files/wsdd2.init
index ee60eee2d..ff7134d4f 100644
--- a/net/wsdd2/files/wsdd2.init
+++ b/net/wsdd2/files/wsdd2.init
@@ -68,7 +68,7 @@ start_service() {
 	[ -n "$ifname" ] && procd_append_param command -i "$ifname"
 	procd_append_param command -N "$NB_PARM"
 	procd_append_param command -G "$WG_PARM"
-	procd_append_param command -b "$BI_PARM"
+	[ "x${BI_PARM}" != "x" ] && procd_append_param command -b "$BI_PARM"
 	procd_set_param respawn
 	procd_set_param file "$SMB_CONF"
 	procd_close_instance