diff --git a/srcpkgs/xen/template b/srcpkgs/xen/template
index 930296532e..c8ad8ec655 100644
--- a/srcpkgs/xen/template
+++ b/srcpkgs/xen/template
@@ -87,6 +87,7 @@ fi
 
 if [ "$XBPS_TARGET_LIBC" = musl ]; then
 	makedepends+=" argp-standalone"
+	export ac_cv_lib_argp_argp_usage=yes
 else
 	makedepends+=" gcc-multilib"
 fi