diff --git a/modules/programs/ghostty.nix b/modules/programs/ghostty.nix
index b2c147cc..9ebaa7b3 100644
--- a/modules/programs/ghostty.nix
+++ b/modules/programs/ghostty.nix
@@ -120,6 +120,7 @@ in {
         {
           "ghostty/config" = lib.mkIf (cfg.settings != { }) {
             source = keyValue.generate "ghostty-config" cfg.settings;
+            onChange = "${lib.getExe cfg.package} +validate-config";
           };
         }