diff --git a/srcpkgs/fwknop/template b/srcpkgs/fwknop/template
index 7ae4aa9f99c..099c265403c 100644
--- a/srcpkgs/fwknop/template
+++ b/srcpkgs/fwknop/template
@@ -8,12 +8,14 @@ hostmakedepends="iptables"
 makedepends="libpcap-devel gpgme-devel"
 short_desc="Single Packet Authorization (SPA) implementation"
 maintainer="Steve Prybylski <sa.prybylx@gmail.com>"
-license="GPL-2"
+license="GPL-2.0-only"
 homepage="https://www.cipherdyne.org/fwknop/"
 changelog="https://raw.githubusercontent.com/mrash/fwknop/master/ChangeLog"
 distfiles="${homepage}/download/${pkgname}-${version}.tar.gz"
 checksum=2b15050bae92ec5210fcac944a7aa4bf9c651333a2b2960aabcd5cfc1d527cf1
 
+CFLAGS="-fcommon"
+
 fwknopd_package() {
 	depends="iptables libfko>=${version}_${revision}"
 	conf_files="/etc/fwknop/*.conf"