diff --git a/Userland/Libraries/LibWeb/URL/URLSearchParams.cpp b/Userland/Libraries/LibWeb/URL/URLSearchParams.cpp
index 1d4eaa7f50..14ef8d01d6 100644
--- a/Userland/Libraries/LibWeb/URL/URLSearchParams.cpp
+++ b/Userland/Libraries/LibWeb/URL/URLSearchParams.cpp
@@ -89,9 +89,9 @@ Vector<QueryParam> url_decode(StringView input)
     return output;
 }
 
-JS::NonnullGCPtr<URLSearchParams> URLSearchParams::create(JS::Realm& realm, Vector<QueryParam> list)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> URLSearchParams::create(JS::Realm& realm, Vector<QueryParam> list)
 {
-    return realm.heap().allocate<URLSearchParams>(realm, realm, move(list)).release_allocated_value_but_fixme_should_propagate_errors();
+    return MUST_OR_THROW_OOM(realm.heap().allocate<URLSearchParams>(realm, realm, move(list)));
 }
 
 // https://url.spec.whatwg.org/#dom-urlsearchparams-urlsearchparams
diff --git a/Userland/Libraries/LibWeb/URL/URLSearchParams.h b/Userland/Libraries/LibWeb/URL/URLSearchParams.h
index afe56d02d4..78b50826a5 100644
--- a/Userland/Libraries/LibWeb/URL/URLSearchParams.h
+++ b/Userland/Libraries/LibWeb/URL/URLSearchParams.h
@@ -23,7 +23,7 @@ class URLSearchParams : public Bindings::PlatformObject {
     WEB_PLATFORM_OBJECT(URLSearchParams, Bindings::PlatformObject);
 
 public:
-    static JS::NonnullGCPtr<URLSearchParams> create(JS::Realm&, Vector<QueryParam> list);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> create(JS::Realm&, Vector<QueryParam> list);
     static WebIDL::ExceptionOr<JS::NonnullGCPtr<URLSearchParams>> construct_impl(JS::Realm&, Variant<Vector<Vector<DeprecatedString>>, OrderedHashMap<DeprecatedString, DeprecatedString>, DeprecatedString> const& init);
 
     virtual ~URLSearchParams() override;