diff --git a/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp b/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
index 77cb4186ddd..336e28b8bc3 100644
--- a/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
@@ -80,43 +80,43 @@ WebIDL::ExceptionOr<Infrastructure::BodyWithType> extract_body(JS::Realm& realm,
             length = blob->size();
             // If object’s type attribute is not the empty byte sequence, set type to its value.
             if (!blob->type().is_empty())
-                type = TRY_OR_THROW_OOM(vm, ByteBuffer::copy(blob->type().bytes()));
+                type = MUST(ByteBuffer::copy(blob->type().bytes()));
             return {};
         },
         [&](ReadonlyBytes bytes) -> WebIDL::ExceptionOr<void> {
             // Set source to object.
-            source = TRY_OR_THROW_OOM(vm, ByteBuffer::copy(bytes));
+            source = MUST(ByteBuffer::copy(bytes));
             return {};
         },
         [&](JS::Handle<WebIDL::BufferSource> const& buffer_source) -> WebIDL::ExceptionOr<void> {
             // Set source to a copy of the bytes held by object.
-            source = TRY_OR_THROW_OOM(vm, WebIDL::get_buffer_source_copy(*buffer_source->raw_object()));
+            source = MUST(WebIDL::get_buffer_source_copy(*buffer_source->raw_object()));
             return {};
         },
         [&](JS::Handle<XHR::FormData> const& form_data) -> WebIDL::ExceptionOr<void> {
             // Set action to this step: run the multipart/form-data encoding algorithm, with object’s entry list and UTF-8.
-            auto serialized_form_data = TRY_OR_THROW_OOM(vm, HTML::serialize_to_multipart_form_data(form_data->entry_list()));
+            auto serialized_form_data = MUST(HTML::serialize_to_multipart_form_data(form_data->entry_list()));
             // Set source to object.
             source = serialized_form_data.serialized_data;
             // FIXME: Set length to unclear, see html/6424 for improving this.
             // Set type to `multipart/form-data; boundary=`, followed by the multipart/form-data boundary string generated by the multipart/form-data encoding algorithm.
-            type = TRY_OR_THROW_OOM(vm, ByteBuffer::copy(TRY_OR_THROW_OOM(vm, String::formatted("multipart/form-data; boundary={}"sv, serialized_form_data.boundary)).bytes()));
+            type = MUST(ByteBuffer::copy(MUST(String::formatted("multipart/form-data; boundary={}"sv, serialized_form_data.boundary)).bytes()));
             return {};
         },
         [&](JS::Handle<DOMURL::URLSearchParams> const& url_search_params) -> WebIDL::ExceptionOr<void> {
             // Set source to the result of running the application/x-www-form-urlencoded serializer with object’s list.
             auto search_params_string = TRY(url_search_params->to_string());
-            source = TRY_OR_THROW_OOM(vm, ByteBuffer::copy(search_params_string.bytes()));
+            source = MUST(ByteBuffer::copy(search_params_string.bytes()));
             // Set type to `application/x-www-form-urlencoded;charset=UTF-8`.
-            type = TRY_OR_THROW_OOM(vm, ByteBuffer::copy("application/x-www-form-urlencoded;charset=UTF-8"sv.bytes()));
+            type = MUST(ByteBuffer::copy("application/x-www-form-urlencoded;charset=UTF-8"sv.bytes()));
             return {};
         },
         [&](String const& scalar_value_string) -> WebIDL::ExceptionOr<void> {
             // NOTE: AK::String is always UTF-8.
             // Set source to the UTF-8 encoding of object.
-            source = TRY_OR_THROW_OOM(vm, ByteBuffer::copy(scalar_value_string.bytes()));
+            source = MUST(ByteBuffer::copy(scalar_value_string.bytes()));
             // Set type to `text/plain;charset=UTF-8`.
-            type = TRY_OR_THROW_OOM(vm, ByteBuffer::copy("text/plain;charset=UTF-8"sv.bytes()));
+            type = MUST(ByteBuffer::copy("text/plain;charset=UTF-8"sv.bytes()));
             return {};
         },
         [&](JS::Handle<Streams::ReadableStream> const& stream) -> WebIDL::ExceptionOr<void> {