diff --git a/Libraries/LibWeb/HighResolutionTime/TimeOrigin.cpp b/Libraries/LibWeb/HighResolutionTime/TimeOrigin.cpp
index 451e7a0eaa8..e1ad35dcc85 100644
--- a/Libraries/LibWeb/HighResolutionTime/TimeOrigin.cpp
+++ b/Libraries/LibWeb/HighResolutionTime/TimeOrigin.cpp
@@ -59,10 +59,14 @@ DOMHighResTimeStamp current_high_resolution_time(JS::Object const& global)
 }
 
 // https://w3c.github.io/hr-time/#dfn-relative-high-resolution-time
+// https://pr-preview.s3.amazonaws.com/w3c/hr-time/pull/168.html#dfn-relative-high-resolution-time
 DOMHighResTimeStamp relative_high_resolution_time(DOMHighResTimeStamp time, JS::Object const& global)
 {
-    // 1. Let coarse time be the result of calling coarsen time with time and global's relevant settings object's cross-origin isolated capability.
-    auto coarse_time = coarsen_time(time, HTML::relevant_settings_object(global).cross_origin_isolated_capability() == HTML::CanUseCrossOriginIsolatedAPIs::Yes);
+    // 1. Let settings be the global's relevant principal settings object.
+    auto& settings = HTML::relevant_principal_settings_object(global);
+
+    // 2. Let coarse time be the result of calling coarsen time with time and settings's cross-origin isolated capability.
+    auto coarse_time = coarsen_time(time, settings.cross_origin_isolated_capability() == HTML::CanUseCrossOriginIsolatedAPIs::Yes);
 
     // 2. Return the relative high resolution coarse time for coarse time and global.
     return relative_high_resolution_coarsen_time(coarse_time, global);
diff --git a/Tests/LibWeb/Text/expected/HTML/ShadowRealm-DOM-event.txt b/Tests/LibWeb/Text/expected/HTML/ShadowRealm-DOM-event.txt
new file mode 100644
index 00000000000..c8b728732c1
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/HTML/ShadowRealm-DOM-event.txt
@@ -0,0 +1 @@
+My DOM Event
diff --git a/Tests/LibWeb/Text/input/HTML/ShadowRealm-DOM-event.html b/Tests/LibWeb/Text/input/HTML/ShadowRealm-DOM-event.html
new file mode 100644
index 00000000000..7a446b04596
--- /dev/null
+++ b/Tests/LibWeb/Text/input/HTML/ShadowRealm-DOM-event.html
@@ -0,0 +1,8 @@
+<script src="../include.js"></script>
+<script>
+    test(() => {
+        const shadowRealm = new ShadowRealm();
+        const result = shadowRealm.evaluate(`() => new Event("My DOM Event").type;`)();
+        println(result);
+    });
+</script>