--- iputils-s20121121/Makefile.orig	2012-11-22 07:33:01.000000000 +0100
+++ iputils-s20121121/Makefile	2012-11-22 07:33:54.886547891 +0100
@@ -45,7 +45,7 @@
 	LIB_SYSFS = -lsysfs
 endif
 
-ifneq ($(USE_IDN),no)
+ifneq ($(USE_IDN),yes)
 	DEF_IDN = -DUSE_IDN
 	LIB_IDN = -lidn
 endif