diff -r f06fc05f7c01 -r cd10c7c9f25c src/Pure/ML/ml_pp.ML
--- a/src/Pure/ML/ml_pp.ML	Fri Sep 06 14:34:07 2024 +0200
+++ b/src/Pure/ML/ml_pp.ML	Fri Sep 06 14:47:42 2024 +0200
@@ -13,7 +13,7 @@
   val pp_thm: Proof.context -> thm -> Pretty.T
 end;
 
-structure ML_PP: sig end =
+structure ML_PP: ML_PP =
 struct
 
 (* logical context *)