diff -r 6ce0c8d59f5a -r ec121999a9cb src/HOL/Typerep.thy
--- a/src/HOL/Typerep.thy	Sun Oct 06 22:56:07 2024 +0200
+++ b/src/HOL/Typerep.thy	Tue Oct 08 12:10:35 2024 +0200
@@ -18,7 +18,7 @@
 end
 
 syntax
-  "_TYPEREP" :: "type => logic"  (\<open>(\<open>indent=1 notation=\<open>prefix TYPEREP\<close>\<close>TYPEREP/(1'(_')))\<close>)
+  "_TYPEREP" :: "type => logic"  (\<open>(\<open>indent=1 notation=\<open>mixfix TYPEREP\<close>\<close>TYPEREP/(1'(_')))\<close>)
 syntax_consts
   "_TYPEREP" \<rightleftharpoons> typerep