diff --git a/collects/scribblings/tools/tools.scrbl b/collects/scribblings/tools/tools.scrbl
index 6d07edf848..e67d28bef6 100644
--- a/collects/scribblings/tools/tools.scrbl
+++ b/collects/scribblings/tools/tools.scrbl
@@ -779,7 +779,7 @@ Check Syntax is a part of the DrRacket collection, but is implemented via the to
  @defmethod[(syncheck:add-definition-target [source-obj (not/c #f)]
                                             [start exact-nonnegative-integer?]
                                             [finish exact-nonnegative-integer?]
-                                            [style-name any/c])]{
+                                            [style-name any/c]) void?]{
      
   }