diff --git a/nixos/modules/services/databases/mysql.nix b/nixos/modules/services/databases/mysql.nix
index fcf1f123cfb..e5e8a57f4b0 100644
--- a/nixos/modules/services/databases/mysql.nix
+++ b/nixos/modules/services/databases/mysql.nix
@@ -52,6 +52,7 @@ in
 
       package = mkOption {
         type = types.package;
+        default = pkgs.mysql;
         example = literalExample "pkgs.mysql";
         description = "
           Which MySQL derivation to use.