diff --git a/srcpkgs/klystrack/template b/srcpkgs/klystrack/template
index d941b373e27..927645f0787 100644
--- a/srcpkgs/klystrack/template
+++ b/srcpkgs/klystrack/template
@@ -15,6 +15,8 @@ distfiles="https://github.com/kometbomb/klystrack/archive/${version}.tar.gz
 checksum="569dc552ffdfcef94cb1ed993b41494e0c52a7ec15d0cdf614490b92f6611efb
  877bf4b7dc506ede2309c5c9c838d58d52ff031fef7415e9b491ce584078e2f5"
 
+CFLAGS="-fcommon"
+
 do_build() {
 	test -d klystron ||
 		mv klystron-${_klystronsha} klystron