diff --git a/nixos/modules/config/networking.nix b/nixos/modules/config/networking.nix
index 9e7cfbd686cc..426aaa34885c 100644
--- a/nixos/modules/config/networking.nix
+++ b/nixos/modules/config/networking.nix
@@ -13,7 +13,7 @@ let
 
   resolvconfOptions = cfg.resolvconfOptions
     ++ optional cfg.dnsSingleRequest "single-request"
-    ++ optional cfg.dnsExtensionMechanism "ends0";
+    ++ optional cfg.dnsExtensionMechanism "edns0";
 in
 
 {