diff --git a/module/oop/goops.scm b/module/oop/goops.scm
index 543acffe4..64c3d1182 100644
--- a/module/oop/goops.scm
+++ b/module/oop/goops.scm
@@ -1183,6 +1183,14 @@ followed by its associated value.  If @var{l} does not hold a value for
 ;;;
 
 (define (make-class supers slots . options)
+  (define (find-duplicate l)
+    (match l
+      (() #f)
+      ((head . tail)
+       (if (memq head tail)
+           head
+           (find-duplicate tail)))))
+
   (let* ((name (get-keyword #:name options (make-unbound)))
          (supers (if (not (or-map (lambda (class)
                                     (memq <object>
diff --git a/module/oop/goops/util.scm b/module/oop/goops/util.scm
index fa486453b..8b48f98cc 100644
--- a/module/oop/goops/util.scm
+++ b/module/oop/goops/util.scm
@@ -17,24 +17,12 @@
 
 
 (define-module (oop goops util)
-  :export (find-duplicate
-	   map* for-each* length* improper->proper)
-  :use-module (srfi srfi-1)
-  :re-export  (any every)
-  :no-backtrace
-  )
-
+  #:export (map* for-each* length*))
 
 ;;;
 ;;; {Utilities}
 ;;;
 
-(define (find-duplicate l)	; find a duplicate in a list; #f otherwise
-  (cond 
-    ((null? l)			#f)
-    ((memv (car l) (cdr l))	(car l))
-    (else 			(find-duplicate (cdr l)))))
-
 (define (map* fn . l) 		; A map which accepts dotted lists (arg lists  
   (cond 			; must be "isomorph"
    ((null? (car l)) '())
@@ -52,8 +40,3 @@
   (do ((n 0 (+ 1 n))
        (ls ls (cdr ls)))
       ((not (pair? ls)) n)))
-
-(define (improper->proper ls)
-  (if (pair? ls)
-      (cons (car ls) (improper->proper (cdr ls)))
-      (list ls)))