diff -r ce09935439b3 -r 2e0b7ca391dc src/Tools/isac/Knowledge/LinEq.thy
--- a/src/Tools/isac/Knowledge/LinEq.thy	Wed Aug 03 18:17:27 2022 +0200
+++ b/src/Tools/isac/Knowledge/LinEq.thy	Thu Aug 04 12:48:37 2022 +0200
@@ -88,7 +88,7 @@
 (*isolate the bound variable in an linear equation; 'bdv' is a meta-constant*)
 val LinEq_simplify = prep_rls'(
   Rule_Def.Repeat {id = "LinEq_simplify", preconds = [],
-    rew_ord = ("e_rew_ord", Rewrite_Ord.e_rew_ord),
+    rew_ord = ("Rewrite_Ord.id_empty", Rewrite_Ord.function_empty),
     erls = LinEq_erls,
     srls = Rule_Set.Empty,
     calc = [], errpatts = [],