diff --git a/srcpkgs/kidletime/template b/srcpkgs/kidletime/template
index 9ae761fa040..34040dc3a3e 100644
--- a/srcpkgs/kidletime/template
+++ b/srcpkgs/kidletime/template
@@ -13,10 +13,6 @@ homepage="https://projects.kde.org/projects/frameworks/kidletime"
 distfiles="http://download.kde.org/stable/frameworks/${version%.*}/${pkgname}-${version}.tar.xz"
 checksum=3d66400e008d20d2c2710caebf8a2d6f94197c11643c5df713b95889467cd95a
 
-post_configure() {
-	find -name flags.make -exec sed -i "{}" -e"s;-isystem;-I;g" \;
-}
-
 kidletime-devel_package() {
 	short_desc+=" - development"
 	depends="${makedepends} ${sourcepkg}-${version}_${revision}"