diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
index 3dac65925fe..db8d71abc3f 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
@@ -117,7 +117,6 @@ void HTMLFormElement::submit_form(RefPtr<HTMLElement> submitter, bool from_submi
         auto body = url_encode(parameters, AK::URL::PercentEncodeSet::ApplicationXWWWFormUrlencoded).to_byte_buffer();
         request.set_method("POST");
         request.set_header("Content-Type", "application/x-www-form-urlencoded");
-        request.set_header("Content-Length", String::number(body.size()));
         request.set_body(body);
     }