diff --git a/debian/control b/debian/control
index 3c99754..73d60ba 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,7 @@ Priority: standard
 Maintainer: Marco d'Itri <md@linux.it>
 Standards-Version: 4.3.0.1
 Rules-Requires-Root: no
-Build-Depends: debhelper (>= 10), gettext, libidn2-dev (>= 2.0.3)
+Build-Depends: debhelper (>= 10), gettext, pkg-config, libidn2-dev (>= 2.0.3)
 Vcs-Git: git://github.com/rfc1036/whois.git
 Vcs-Browser: https://github.com/rfc1036/whois