diff --git a/srcpkgs/lxqt-admin/template b/srcpkgs/lxqt-admin/template
index f8b2b2e2f10..6795b736ec1 100644
--- a/srcpkgs/lxqt-admin/template
+++ b/srcpkgs/lxqt-admin/template
@@ -13,10 +13,6 @@ homepage="http://lxqt.org/"
 distfiles="https://github.com/lxde/lxqt-admin/releases/download/${version}/lxqt-admin-${version}.tar.xz"
 checksum=b4b26df2901abf84742ff1daf17dbca6e145cf55552efbf424e6c77012b946cb
 
-post_configure() {
-	find -name flags.make -exec sed -i "{}" -e"s;-isystem;-I;g" \;
-}
-
 post_install() {
 	# depends on systemd-{timedated,timesyncd}
 	rm -f ${DESTDIR}/usr/bin/lxqt-admin-time