diff --git a/npm_install.py b/npm_install.py
index 251ef33..1ee7308 100644
--- a/npm_install.py
+++ b/npm_install.py
@@ -136,6 +136,28 @@ def download_extract_tar_gz(url: str, dest_dir: Path) -> Path:
         os.unlink(tf_path)
     return dest_dir / top
 
+# === NA GÓRZE pliku, obok innych utili ===
+def sync_backup_nginx_conf():
+    from pathlib import Path
+    import shutil, filecmp
+    src = Path("/etc/nginx.bak/conf.d")
+    dst = Path("/etc/angie/conf.d")
+    if not src.exists():
+        return
+    with step("Sync /etc/nginx.bak/conf.d -> /etc/angie/conf.d"):
+        for p in src.rglob("*"):
+            if p.is_dir():
+                continue
+            rel = p.relative_to(src)
+            target = dst / rel
+            target.parent.mkdir(parents=True, exist_ok=True)
+            try:
+                if not target.exists() or not filecmp.cmp(p, target, shallow=False):
+                    shutil.copy2(p, target)
+            except Exception as e:
+                print(f"Warning: sync failed for {p} -> {target}: {e}")
+
+
 def ensure_nginx_symlink():
     from pathlib import Path
     target = Path("/etc/angie")
@@ -884,6 +906,7 @@ def main():
     ensure_nginx_symlink()
     install_logrotate_for_data_logs()
     fix_logrotate_permissions_and_wrapper()
+    sync_backup_nginx_conf()
     with step("Restarting services after installation"):
         run(["systemctl","restart","angie.service"], check=False)
         run(["systemctl","restart","npm.service"], check=False)