diff --git a/basis/classes/struct/prettyprint/prettyprint.factor b/basis/classes/struct/prettyprint/prettyprint.factor
index e88834530c..8bda9dc5f9 100644
--- a/basis/classes/struct/prettyprint/prettyprint.factor
+++ b/basis/classes/struct/prettyprint/prettyprint.factor
@@ -1,18 +1,13 @@
 ! (c)Joe Groff bsd license
 USING: accessors alien alien.c-types arrays assocs classes
 classes.struct combinators combinators.short-circuit continuations
-fry kernel libc make math math.parser mirrors prettyprint.backend
-prettyprint.custom prettyprint.sections see.private sequences
-slots strings summary words ;
+definitions fry kernel libc make math math.parser mirrors
+prettyprint.backend prettyprint.custom prettyprint.sections
+see see.private sequences slots strings summary words ;
 IN: classes.struct.prettyprint
 
 <PRIVATE
 
-: struct-definer-word ( class -- word )
-    struct-slots dup length 2 >=
-    [ second offset>> 0 = \ UNION-STRUCT: \ STRUCT: ? ]
-    [ drop \ STRUCT: ] if ;
-
 : struct>assoc ( struct -- assoc )
     [ class struct-slots ] [ struct-slot-values ] bi zip ;
 
@@ -39,8 +34,14 @@ IN: classes.struct.prettyprint
 
 PRIVATE>
 
+M: struct-class definer
+    struct-slots dup length 2 >=
+    [ second offset>> 0 = \ UNION-STRUCT: \ STRUCT: ? ]
+    [ drop \ STRUCT: ] if
+    \ ; ;
+
 M: struct-class see-class*
-    <colon dup struct-definer-word pprint-word dup pprint-word
+    <colon dup definer drop pprint-word dup pprint-word
     <block struct-slots [ pprint-struct-slot ] each
     block> pprint-; block> ;