diff --git a/web/templates/errorXXX.pug b/web/templates/errorXXX.pug
index f659cda..ad9dfa3 100755
--- a/web/templates/errorXXX.pug
+++ b/web/templates/errorXXX.pug
@@ -22,7 +22,7 @@ block nav
     h1 #{http.StatusText(code)}
 
 block content
-    :go:func ErrorXXX(title, reason, message string, code int)
+    :go:func ErrorXXX(title, reason, message, referer string, code int)
 	section#error
 		h1 #{code}
 		| #{http.StatusText(code)}
@@ -30,3 +30,6 @@ block content
             p #{reason}
         if message != ""
             p #{message}
+    if referer != ""
+        section
+            h2 #[a(href=referer) Go back]