--- a/src/FOL/IFOL.thy Fri Apr 08 23:25:48 2011 +0200
+++ b/src/FOL/IFOL.thy Fri Apr 08 23:33:57 2011 +0200
@@ -590,7 +590,7 @@
use "fologic.ML"
-lemma thin_refl: "!!X. [|x=x; PROP W|] ==> PROP W" .
+lemma thin_refl: "[|x=x; PROP W|] ==> PROP W" .
use "hypsubstdata.ML"
setup hypsubst_setup