diff --git a/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp b/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
index 6615cf8d4c..508f8ba79f 100644
--- a/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
+++ b/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
@@ -1635,4 +1635,11 @@ bool BrowsingContext::is_ancestor_of(BrowsingContext const& other) const
     return false;
 }
 
+// https://html.spec.whatwg.org/multipage/browsing-the-web.html#snapshotting-target-snapshot-params
+SandboxingFlagSet determine_the_creation_sandboxing_flags(BrowsingContext const&, JS::GCPtr<DOM::Element>)
+{
+    // FIXME: Populate this once we have the proper flag sets on BrowsingContext
+    return {};
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/HTML/BrowsingContext.h b/Userland/Libraries/LibWeb/HTML/BrowsingContext.h
index 8743a455c6..485ba9ccd9 100644
--- a/Userland/Libraries/LibWeb/HTML/BrowsingContext.h
+++ b/Userland/Libraries/LibWeb/HTML/BrowsingContext.h
@@ -338,6 +338,8 @@ HTML::Origin determine_the_origin(BrowsingContext const& browsing_context, Optio
 
 HTML::Origin determine_the_origin(AK::URL const& url, SandboxingFlagSet sandbox_flags, Optional<HTML::Origin> source_origin, Optional<HTML::Origin> container_origin);
 
+SandboxingFlagSet determine_the_creation_sandboxing_flags(BrowsingContext const&, JS::GCPtr<DOM::Element> embedder);
+
 // FIXME: Find a better home for this
 bool url_matches_about_blank(AK::URL const& url);