diff --git a/deploy-production/nginx.conf b/deploy-production/nginx.conf
index 065ed2b..3ef22bf 100644
--- a/deploy-production/nginx.conf
+++ b/deploy-production/nginx.conf
@@ -126,7 +126,11 @@ server {
         # JS: service worker route handling
         sub_filter 'createHandlerBoundToURL("/index.html")' 'createHandlerBoundToURL("/ahnenforschung/index.html")';
 
-        # CSS: font paths — ../fonts/ resolves correctly from subpath, no rewrite needed
+        # CSS: fix font paths in fonts.css — the CSS lives at /ahnenforschung/fonts/fonts.css
+        # and references url('fonts/MaterialIcons.woff2') which resolves to
+        # /ahnenforschung/fonts/fonts/MaterialIcons.woff2 (double fonts/).
+        # Strip the fonts/ prefix so url('MaterialIcons.woff2') resolves correctly.
+        sub_filter "url('fonts/" "url('";
 
         # WebSocket support
         proxy_http_version 1.1;