diff --git a/components/style/stylist.rs b/components/style/stylist.rs
index 29633ae8509..1629827a96c 100644
--- a/components/style/stylist.rs
+++ b/components/style/stylist.rs
@@ -1203,7 +1203,7 @@ impl Stylist {
                                                   &rule_hash_target,
                                                   applicable_declarations,
                                                   context,
-                                              self.quirks_mode,
+                                                  self.quirks_mode,
                                                   flags_setter,
                                                   CascadeLevel::AuthorNormal);
             } else {