diff --git a/srcpkgs/xfce4-dev-tools/template b/srcpkgs/xfce4-dev-tools/template
index ac3c4812990..b0b540766de 100644
--- a/srcpkgs/xfce4-dev-tools/template
+++ b/srcpkgs/xfce4-dev-tools/template
@@ -12,3 +12,13 @@ license="GPL-2.0-or-later"
 homepage="https://xfce.org/"
 distfiles="https://archive.xfce.org/src/xfce/${pkgname}/${version%.*}/${pkgname}-${version}.tar.bz2"
 checksum=f50b3070e66f3ebdf331744dd1ec5e1af5de333965d491e15ce05545e8eb4f04
+
+post_patch() {
+	[ "$CROSS_BUILD" ] || return 0
+	# For testing, which can't be run on cross build
+	vsed -i -e '/^\ttest-xdt-csource\t/d' tests/Makefile.am
+	vsed -i -e 's/^TESTS =.*/TESTS =/' \
+		-e 's/^check_PROGRAMS =.*/check_PROGRAMS =/' \
+		-e 's/\$.*xdt-csource --extern.*>/touch /' \
+		tests/Makefile.in
+}