diff --git a/package/whois/whois.mk b/package/whois/whois.mk
index 22117cf3aa..18071ab6bd 100644
--- a/package/whois/whois.mk
+++ b/package/whois/whois.mk
@@ -27,6 +27,11 @@ WHOIS_DEPENDENCIES += libidn
 WHOIS_MAKE_ENV += HAVE_LIBIDN=1
 endif
 
+ifeq ($(BR2_PACKAGE_LIBIDN2),y)
+WHOIS_DEPENDENCIES += libidn2
+WHOIS_MAKE_ENV += HAVE_LIBIDN2=1
+endif
+
 ifeq ($(BR2_SYSTEM_ENABLE_NLS),y)
 WHOIS_BUILD_TARGETS =
 WHOIS_INSTALL_TARGETS = install