diff -r 842be30dc336 -r 97ae96c72d8c src/Pure/thm.ML
--- a/src/Pure/thm.ML	Wed Apr 16 18:21:00 1997 +0200
+++ b/src/Pure/thm.ML	Wed Apr 16 18:22:10 1997 +0200
@@ -502,7 +502,7 @@
              not (!force_strip_shyps) then shyps'
           else    (* FIXME tmp *)
               (warning ("Removed sort hypotheses: " ^
-                        commas (map Type.str_of_sort (shyps' \\ sorts)));
+                        commas (map Sorts.str_of_sort (shyps' \\ sorts)));
                warning "Let's hope these sorts are non-empty!";
            sorts)),
       hyps = hyps,