diff --git a/src/components/style/properties/mod.rs.mako b/src/components/style/properties/mod.rs.mako
index f22e6095390..e531f4aac8f 100644
--- a/src/components/style/properties/mod.rs.mako
+++ b/src/components/style/properties/mod.rs.mako
@@ -515,6 +515,7 @@ pub mod longhands {
 
 
     // CSS 2.1, Section 11 - Visual effects
+    // FIXME: Implement scrolling for `scroll` and `auto` (#2742).
     ${single_keyword("overflow", "visible hidden scroll auto")}
 
     ${switch_to_style_struct("InheritedBox")}