diff --git a/etc/noosfero/varnish-accept-language.vcl b/etc/noosfero/varnish-accept-language.vcl
index 007240b..306f61a 100644
--- a/etc/noosfero/varnish-accept-language.vcl
+++ b/etc/noosfero/varnish-accept-language.vcl
@@ -185,5 +185,9 @@ sub vcl_recv {
 }
 
 sub vcl_fetch {
-  set beresp.http.Vary = "X-Varnish-Accept-Language";
+  if (beresp.http.Vary) {
+    set beresp.http.Vary = beresp.http.Vary ", X-Varnish-Accept-Language";
+  } else {
+    set beresp.http.Vary = "X-Varnish-Accept-Language";
+  }
 }
--
libgit2 0.21.2