diff --git a/lisp/international/characters.el b/lisp/international/characters.el
index 99985fa72c7..1739b1f9ea3 100644
--- a/lisp/international/characters.el
+++ b/lisp/international/characters.el
@@ -576,7 +576,7 @@ with L, LRE, or LRO Unicode bidi character type.")
 	  (set-case-syntax-pair from (1+ from) tbl)
 	  (setq from (+ from 2))))))
 
-  (set-case-syntax-pair ?Ÿ ?ÿ tbl)
+  (set-case-syntax-pair #x178 #x0ff tbl)
   (set-case-syntax-pair #x189 #x256 tbl)
   (set-case-syntax-pair #x18A #x257 tbl)