diff --git a/src/components/compositing/constellation.rs b/src/components/compositing/constellation.rs
index 529ae8a92ea..4d55b25f4f4 100644
--- a/src/components/compositing/constellation.rs
+++ b/src/components/compositing/constellation.rs
@@ -723,7 +723,7 @@ impl Constellation {
 
         for current_frame in self.current_frame().iter() {
             // Messages originating in the current frame are not navigations;
-            // they may come from a page load in a sub-frame.
+            // they may come from a page load in a subframe.
             if current_frame.contains(pipeline_id) {
                 for frame in current_frame.iter() {
                     frame.pipeline.grant_paint_permission();