diff --git a/sources/api/netdog/src/networkd/config/netdev.rs b/sources/api/netdog/src/networkd/config/netdev.rs
index 9ca750c3f31..f3b6aa5d5a7 100644
--- a/sources/api/netdog/src/networkd/config/netdev.rs
+++ b/sources/api/netdog/src/networkd/config/netdev.rs
@@ -135,7 +135,7 @@ enum NetDevMacAddress {
 impl Display for NetDevMacAddress {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            NetDevMacAddress::MacAddress(m) => write!(f, "{}", m.to_string()),
+            NetDevMacAddress::MacAddress(m) => write!(f, "{}", m),
             NetDevMacAddress::Nothing => write!(f, "none"),
         }
     }