diff -r a0dc597d9173 -r 5651e0636e38 src/Pure/Isar/session.ML
--- a/src/Pure/Isar/session.ML	Thu Jan 18 20:40:33 2001 +0100
+++ b/src/Pure/Isar/session.ML	Thu Jan 18 20:40:47 2001 +0100
@@ -32,7 +32,7 @@
 
 fun path () = ! session_path;
 
-fun str_of [] = "Pure"
+fun str_of [] = pure
   | str_of elems = space_implode "/" elems;
 
 fun welcome () = "Welcome to Isabelle/" ^ str_of (path ()) ^ " (" ^ version ^ ")";