diff --git a/sys/src/cmd/auth/factotum/dat.h b/sys/src/cmd/auth/factotum/dat.h
index 5cc0c1b8b..eb89d0d2f 100644
--- a/sys/src/cmd/auth/factotum/dat.h
+++ b/sys/src/cmd/auth/factotum/dat.h
@@ -122,9 +122,7 @@ struct Proto
 	char *keyprompt;
 };
 
-extern char *invoker;
 extern char *owner;
-extern char *authdom;
 
 extern char Easproto[];
 extern char Ebadarg[];