diff --git a/Applications/System/systemd-networkd.md b/Applications/System/systemd-networkd.md
index 6c9fbeb..3b0800e 100644
--- a/Applications/System/systemd-networkd.md
+++ b/Applications/System/systemd-networkd.md
@@ -35,3 +35,5 @@ Name=wl*
 [Network]
 DHCP=yes
 ```
+
+For wireless adapter, need [iwd](Applications/System/iwd.md).