diff --git a/whois.spec b/whois.spec
index 301552b..5a849e4 100644
--- a/whois.spec
+++ b/whois.spec
@@ -1,3 +1,9 @@
+# Add IDN support
+%{bcond_without whois_enables_idn}
+# Use libidn2 instead of libidn1,
+# libidn2 support is broken <https://github.com/rfc1036/whois/issues/50>
+%{bcond_with whois_enables_libidn2}
+
 Name:       whois       
 Version:    5.2.15
 Release:    1%{?dist}
@@ -12,7 +18,13 @@ Patch0:     whois-5.2.15-Fix-misspellings-in-IPv4-formatting-string.patch
 BuildRequires:  coreutils
 BuildRequires:  gcc
 BuildRequires:  gettext
+%if %{with whois_enables_idn}
+%if %{with whois_enables_libidn2}
+BuildRequires:  libidn2-devel
+%else
 BuildRequires:  libidn-devel
+%endif
+%endif
 BuildRequires:  make
 BuildRequires:  perl
 BuildRequires:  perl(autodie)
@@ -39,7 +51,15 @@ addresses and network names.
 
 %build
 # libidn2 support is broken <https://github.com/rfc1036/whois/issues/50>
-make CONFIG_FILE="%{_sysconfdir}/%{cfgfile}" HAVE_LIBIDN=1 HAVE_ICONV=1 \
+make CONFIG_FILE="%{_sysconfdir}/%{cfgfile}" \
+%if %{with whois_enables_idn}
+%if %{with whois_enables_libidn2}
+    HAVE_LIBIDN2=1 \
+%else
+    HAVE_LIBIDN=1 \
+%endif
+%endif
+    HAVE_ICONV=1 \
     CFLAGS="$RPM_OPT_FLAGS" LDFLAGS="%{__global_ldflags}" %{?_smp_mflags}
 
 %install