diff --git a/flake.nix b/flake.nix
index eeb995a..31674d8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -166,10 +166,10 @@
               cat >> Caddyfile <<EOF
               header {
                 -Last-modified
-                Etag "${builtins.baseNameOf websitePath}"
+                Etag "\"${builtins.baseNameOf websitePath}\""
               }
               EOF
-              
+
               caddy fmt --overwrite Caddyfile
 
               runHook postBuild