diff --git a/tests/unit/style/stylist.rs b/tests/unit/style/stylist.rs
index aa7ba430a19..3794de9ec48 100644
--- a/tests/unit/style/stylist.rs
+++ b/tests/unit/style/stylist.rs
@@ -206,13 +206,13 @@ fn test_insert() {
         0,
         selector_map
             .class_hash
-            .get(&Atom::from("intro"), QuirksMode::NoQuirks)
+            .get(&Atom::from("foo"), QuirksMode::NoQuirks)
             .unwrap()[0]
             .source_order
     );
     assert!(selector_map
         .class_hash
-        .get(&Atom::from("foo"), QuirksMode::NoQuirks)
+        .get(&Atom::from("intro"), QuirksMode::NoQuirks)
         .is_none());
 }