diff --git a/test/js/samples/collapses-text-around-comments/expected.js b/test/js/samples/collapses-text-around-comments/expected.js
index e4c120b638..021baa10be 100644
--- a/test/js/samples/collapses-text-around-comments/expected.js
+++ b/test/js/samples/collapses-text-around-comments/expected.js
@@ -16,7 +16,7 @@ import {
 } from "svelte/internal";
 
 function add_css(customStyleTag) {
-	appendStyleIfNotPresent(customStyleTag || document.head, "svelte-1a7i8ec-style", "p.svelte-1a7i8ec{color:red}");
+	appendStyleIfNotPresent(customStyleTag, "1a7i8ec", "p.svelte-1a7i8ec{color:red}");
 }
 
 function create_fragment(ctx) {
diff --git a/test/js/samples/css-media-query/expected.js b/test/js/samples/css-media-query/expected.js
index b8e1531bf1..36b88810b8 100644
--- a/test/js/samples/css-media-query/expected.js
+++ b/test/js/samples/css-media-query/expected.js
@@ -13,7 +13,7 @@ import {
 } from "svelte/internal";
 
 function add_css(customStyleTag) {
-	appendStyleIfNotPresent(customStyleTag || document.head, "svelte-1slhpfn-style", "@media(min-width: 1px){div.svelte-1slhpfn{color:red}}");
+	appendStyleIfNotPresent(customStyleTag, "1slhpfn", "@media(min-width: 1px){div.svelte-1slhpfn{color:red}}");
 }
 
 function create_fragment(ctx) {