diff --git a/layout/style/nsComputedDOMStyle.cpp b/layout/style/nsComputedDOMStyle.cpp
index c717d59c81..910c1de8ae 100644
--- a/layout/style/nsComputedDOMStyle.cpp
+++ b/layout/style/nsComputedDOMStyle.cpp
@@ -674,9 +674,9 @@ nsComputedDOMStyle::UpdateCurrentStyleSources(bool aNeedsLayoutFlush)
     mPresShell->GetPresContext()->GetRestyleGeneration();
 
   if (mStyleContext) {
-    // We can't rely on the undisplayed restyle generation if mElement is
-    // out-of-document, since that generation is not incremented for DOM changes
-    // on out-of-document elements.
+    // We can't rely on the undisplayed restyle generation if mElement is
+    // out-of-document, since that generation is not incremented for DOM changes
+    // on out-of-document elements.
     if (mStyleContextGeneration == currentGeneration &&
         mElement->IsInComposedDoc()) {
       // Our cached style context is still valid.