diff -r 935c78a90ee0 -r 05c4c6a99b3f src/HOL/Proofs/ex/XML_Data.thy
--- a/src/HOL/Proofs/ex/XML_Data.thy	Sun Oct 20 12:56:36 2019 +0200
+++ b/src/HOL/Proofs/ex/XML_Data.thy	Sun Oct 20 16:16:23 2019 +0200
@@ -14,7 +14,8 @@
 ML \<open>
   fun export_proof thy thm =
     Proofterm.encode (Sign.consts_of thy)
-      (Proofterm.reconstruct_proof thy (Thm.prop_of thm) (Thm.standard_proof_of true thm));
+      (Proofterm.reconstruct_proof thy (Thm.prop_of thm)
+        (Thm.standard_proof_of {full = true, expand = [Thm.raw_derivation_name thm]} thm));
 
   fun import_proof thy xml =
     let