diff --git a/app.py b/app.py
index 3e1391d..d7ecfa0 100755
--- a/app.py
+++ b/app.py
@@ -488,9 +488,10 @@ def serve_file(subpath):
     
     if as_attachment:
         response.headers['X-Content-Type-Options'] = 'nosniff'
-    
-    if not as_attachment :
+        response.headers['Content-Disposition'] = 'attachment'
+    else:
         response.headers['Content-Disposition'] = 'inline'
+
     response.headers['Cache-Control'] = 'public, max-age=86400'
 
     # 7) Logging
diff --git a/static/sw.js b/static/sw.js
index 6ed70ce..afb2215 100644
--- a/static/sw.js
+++ b/static/sw.js
@@ -1,4 +1,4 @@
-const VERSION = '1.18';
+const VERSION = '1.19';
 const CACHE_NAME = `gottesdienste-v${VERSION}`;
 const assets = [
   '/',