diff --git a/components/style/properties.mako.rs b/components/style/properties.mako.rs
index 4ac7f6902de..c50d0a852fe 100644
--- a/components/style/properties.mako.rs
+++ b/components/style/properties.mako.rs
@@ -1790,6 +1790,8 @@ pub mod longhands {
                             _ => Err(())
                         }
                     })));
+                } else if filters.is_empty() {
+                    return Err(())
                 } else {
                     return Ok(SpecifiedValue::new(filters))
                 }