diff --git a/zone-definition.nix b/zone-definition.nix
index 4e33adb..1b67e9d 100644
--- a/zone-definition.nix
+++ b/zone-definition.nix
@@ -134,7 +134,7 @@ let
         example = [ "some-host IN CNAME target-host" ];
       };
 
-      dmark-report-address = mkOption {
+      dmarc-report-address = mkOption {
         type = nullOr str;
         description = "Email address to recieve DMARC reports, if any.";
         example = "admin-user@domain.com";