1 files changed, 2 insertions, 2 deletions
diff --git a/nixos/modules/services/databases/mongodb.nix b/nixos/modules/services/databases/mongodb.nix
index c458a1d648a..12879afed47 100644
--- a/nixos/modules/services/databases/mongodb.nix
+++ b/nixos/modules/services/databases/mongodb.nix
@@ -65,9 +65,9 @@ in
         default = false;
         description = "Enable client authentication. Creates a default superuser with username root!";
       };
-      
+
       initialRootPassword = mkOption {
-        type = types.nullOr types.string;
+        type = types.nullOr types.str;
         default = null;
         description = "Password for the root user if auth is enabled.";
       };