diff --git a/nixos/modules/services/networking/bind.nix b/nixos/modules/services/networking/bind.nix
index e1b997b6a86..e507e8ce9ee 100644
--- a/nixos/modules/services/networking/bind.nix
+++ b/nixos/modules/services/networking/bind.nix
@@ -18,7 +18,7 @@ let
       type = types.bool;
     };
     file = mkOption {
-      type = types.str;
+      type = types.either types.str types.path;
       description = "Zone file resource records contain columns of data, separated by whitespace, that define the record.";
     };
     masters = mkOption {