diff --git a/nixos/modules/system/boot/networkd.nix b/nixos/modules/system/boot/networkd.nix
index 8ac6fda6a875..2ff79f1cdc85 100644
--- a/nixos/modules/system/boot/networkd.nix
+++ b/nixos/modules/system/boot/networkd.nix
@@ -733,7 +733,7 @@ let
         (assertValueOneOf "IPv4AcceptLocal" boolValues)
         (assertValueOneOf "IPv4RouteLocalnet" boolValues)
         (assertValueOneOf "IPv4ProxyARP" boolValues)
-        (assertValueOneof "IPv4ProxyARPPrivateVLAN" boolValues)
+        (assertValueOneOf "IPv4ProxyARPPrivateVLAN" boolValues)
         (assertValueOneOf "IPv6ProxyNDP" boolValues)
         (assertValueOneOf "IPv6SendRA" boolValues)
         (assertValueOneOf "DHCPPrefixDelegation" boolValues)