diff --git a/collects/net/cgi-sig.rkt b/collects/net/cgi-sig.rkt
index 6ec6aac..43dfa6a 100644
--- a/collects/net/cgi-sig.rkt
+++ b/collects/net/cgi-sig.rkt
@@ -1,10 +1,5 @@
 #lang racket/signature
 
-;; -- exceptions raised --
-(struct cgi-error ())
-(struct incomplete-%-suffix (chars))
-(struct invalid-%-suffix (char))
-
 ;; -- cgi methods --
 get-bindings
 get-bindings/post