diff --git a/debian/control b/debian/control
index 63e1704..616ddcf 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,7 @@ Priority: standard
 Maintainer: Marco d'Itri <md@linux.it>
 Standards-Version: 4.1.2
 Rules-Requires-Root: no
-Build-Depends: debhelper (>= 9), gettext, libidn2-dev (>= 2.0.3)
+Build-Depends: debhelper (>= 9), gettext, libidn11-dev
 Vcs-Git: git://github.com/rfc1036/whois.git
 Vcs-Browser: https://github.com/rfc1036/whois