diff --git a/srcpkgs/vigra/template b/srcpkgs/vigra/template
index 34bbc69795..17b26c7a36 100644
--- a/srcpkgs/vigra/template
+++ b/srcpkgs/vigra/template
@@ -23,6 +23,10 @@ pre_configure() {
 	fi
 }
 
+post_configure() {
+	find -name flags.make -exec sed -i "{}" -e "s;-isystem;-I;g" \;
+}
+
 post_install() {
 	vmkdir usr/share/$pkgname
 	mv $DESTDIR/usr/doc $DESTDIR/usr/share/$pkgname/doc