diff --git a/etc/noosfero/varnish-accept-language.vcl b/etc/noosfero/varnish-accept-language.vcl
index 306f61a..7e3f6c4 100644
--- a/etc/noosfero/varnish-accept-language.vcl
+++ b/etc/noosfero/varnish-accept-language.vcl
@@ -186,7 +186,7 @@ sub vcl_recv {
 
 sub vcl_fetch {
   if (beresp.http.Vary) {
-    set beresp.http.Vary = beresp.http.Vary ", X-Varnish-Accept-Language";
+    set beresp.http.Vary = beresp.http.Vary + ", X-Varnish-Accept-Language";
   } else {
     set beresp.http.Vary = "X-Varnish-Accept-Language";
   }
diff --git a/etc/noosfero/varnish-noosfero.vcl b/etc/noosfero/varnish-noosfero.vcl
index 272bd91..6ec0bca 100644
--- a/etc/noosfero/varnish-noosfero.vcl
+++ b/etc/noosfero/varnish-noosfero.vcl
@@ -45,7 +45,7 @@ sub vcl_error {
   <div id='wrap'>
     <div id='header'>
       <div id='logo'>&nbsp;</div>
-      <div id='details'><b>"} obj.status "</b> - " obj.response {"</div>
+      <div id='details'><b>"} + obj.status + "</b> - " + obj.response + {"</div>
     </div>
 
     <div id='de' style='display: none' class='message'>
--
libgit2 0.21.2