--- openchange-openchange-2.3-VULCAN/libocpf/lex.l~	2015-05-16 17:22:04.000000000 +0200
+++ openchange-openchange-2.3-VULCAN/libocpf/lex.l	2016-05-01 17:15:37.905107868 +0200
@@ -29,7 +29,6 @@
 #include "libocpf/lex.h"
 
 #define	YY_EXTRA_TYPE	struct ocpf_context *
-#define	YY_NO_UNPUT
 
 static void unterminated(struct ocpf_context *, const char *, unsigned int);