diff --git a/transcode.c b/transcode.c
index 8e36fa13eb..d8cd90e56d 100644
--- a/transcode.c
+++ b/transcode.c
@@ -2889,6 +2889,7 @@ str_encode_associate(VALUE str, int encidx)
  *
  *  Like #encode, but applies encoding changes to +self+; returns +self+.
  *
+ *  Related: see {Modifying}[rdoc-ref:String@Modifying].
  */
 
 static VALUE