diff -r 597efdb7decb -r aafe719dff14 src/HOL/Auth/NS_Public.thy
--- a/src/HOL/Auth/NS_Public.thy	Wed Sep 17 16:40:52 1997 +0200
+++ b/src/HOL/Auth/NS_Public.thy	Thu Sep 18 13:24:04 1997 +0200
@@ -20,7 +20,7 @@
            invent new nonces here, but he can also use NS1.  Common to
            all similar protocols.*)
     Fake "[| evs: ns_public;  B ~= Spy;  
-             X: synth (analz (sees Spy evs)) |]
+             X: synth (analz (spies evs)) |]
           ==> Says Spy B X  # evs : ns_public"
 
          (*Alice initiates a protocol run, sending a nonce to Bob*)