diff --git a/scribble-doc/scribblings/scribble/core.scrbl b/scribble-doc/scribblings/scribble/core.scrbl
index 59ec515b..b7940d2e 100644
--- a/scribble-doc/scribblings/scribble/core.scrbl
+++ b/scribble-doc/scribblings/scribble/core.scrbl
@@ -417,7 +417,7 @@ The recognized @tech{style properties} are as follows:
 
  @item{@tech{numberer} --- A @tech{numberer} created with
        @racket[make-numberer] determines a representation of the
-       part's section number as an extension of it's patent's number.
+       part's section number as an extension of it's parent's number.
        A @tech{numberer} overrides the default representation, which
        is a natural number or (in the case of an accompanying
        @racket['grouper] property) a Roman numeral. If a