Fix problem with filter + in site reference
Fix problem with filter + in site reference

Signed-off-by: Armin Hüneburg <ce14971603cce67272d611a4f194786e96eb4828@gmail.com>

ultimate-comparisons/ultimate-comparison-BASE,ultimate-comparisons/ultimate-comparison-BASE,ultimate-comparisons/ultimate-comparison-BASE,ultimate-comparisons/ultimate-comparison-BASE,ultimate-comparisons/ultimate-comparison-BASE