diff --git a/collects/2htdp/uchat/aux.ss b/collects/2htdp/uchat/auxiliaries.ss
similarity index 100%
rename from collects/2htdp/uchat/aux.ss
rename to collects/2htdp/uchat/auxiliaries.ss
diff --git a/collects/2htdp/uchat/chatter.ss b/collects/2htdp/uchat/chatter.ss
index b38eef13d0..174913c754 100644
--- a/collects/2htdp/uchat/chatter.ss
+++ b/collects/2htdp/uchat/chatter.ss
@@ -2,7 +2,7 @@
 ;; about the language level of this file in a form that our tools can easily process.
 #reader(lib "htdp-intermediate-lambda-reader.ss" "lang")((modname chatter) (read-case-sensitive #t) (teachpacks ()) (htdp-settings #(#t constructor repeating-decimal #f #t none #f ())))
 (require 2htdp/universe)
-(require "aux.ss")
+(require "auxiliaries.ss")
 
 #|