diff -r 34f782641caa -r dcdfb6355a05 src/Pure/Isar/proof_context.ML
--- a/src/Pure/Isar/proof_context.ML	Sun Sep 13 21:06:58 2015 +0200
+++ b/src/Pure/Isar/proof_context.ML	Sun Sep 13 22:25:21 2015 +0200
@@ -1249,7 +1249,7 @@
     val _ =
       if legacy then
         legacy_feature ("Bad case " ^ quote name ^ Position.here pos ^
-          " -- use proof method \"goals\" instead")
+          " -- use proof method \"goal_cases\" instead")
       else ();
 
     val _ = List.app (fn NONE => () | SOME b => ignore (check_var internal b)) param_specs;