1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/nixos/modules/services/networking/namecoind.nix b/nixpkgs/nixos/modules/services/networking/namecoind.nix
index 6ca99e1321bd..16f85df2e77c 100644
--- a/nixpkgs/nixos/modules/services/networking/namecoind.nix
+++ b/nixpkgs/nixos/modules/services/networking/namecoind.nix
@@ -89,7 +89,7 @@ in
       };
 
       rpc.password = mkOption {
-        type = types.str;
+        type = types.nullOr types.str;
         default = null;
         description = ''
           Password for RPC connections.