diff --git a/moli-renderer-v8/src/network_host/headers/methods/iteration.rs b/moli-renderer-v8/src/network_host/headers/methods/iteration.rs
index 282c0b025..8d2acab1f 100644
--- a/moli-renderer-v8/src/network_host/headers/methods/iteration.rs
+++ b/moli-renderer-v8/src/network_host/headers/methods/iteration.rs
@@ -129,7 +129,7 @@ pub(in crate::network_host::headers) fn headers_for_each_callback<'s>(
     let mut index = 0;
     loop {
         // Script can change both the values and the sorted pair order.
-        let entries = normalized_headers_entries(&headers_entries(scope, this));
+        let entries = headers_entries(scope, this);
         let Some((name, value)) = entries.get(index) else {
             break;
         };
diff --git a/moli-renderer-v8/src/script_vm/tests/webidl_fetch.rs b/moli-renderer-v8/src/script_vm/tests/webidl_fetch.rs
index 3accf3ad1..37cc945c9 100644
--- a/moli-renderer-v8/src/script_vm/tests/webidl_fetch.rs
+++ b/moli-renderer-v8/src/script_vm/tests/webidl_fetch.rs
@@ -7694,7 +7694,7 @@ async fn headers_for_each_visits_live_entries_in_window_and_worker() {
             .filter(|check| check["pass"] != true)
             .collect();
         assert_eq!(result["state"], "pass", "worker={worker}: {failures:?}");
-        assert_eq!(checks.len(), 34, "worker={worker}");
+        assert_eq!(checks.len(), 36, "worker={worker}");
     }
 }
 
diff --git a/moli-renderer-v8/tests/fixtures/headers-foreach.js b/moli-renderer-v8/tests/fixtures/headers-foreach.js
index 427101326..9cba8cccb 100644
--- a/moli-renderer-v8/tests/fixtures/headers-foreach.js
+++ b/moli-renderer-v8/tests/fixtures/headers-foreach.js
@@ -39,6 +39,9 @@ async function headersForEachProbe() {
         headers.append('e', '5');
       }
     }, [['a', '1'], ['e', '5']]],
+    ['empty-fields', [['a', '1'], ['b', '2'], ['b', ''], ['c', '3']], (headers, key) => {
+      if (key === 'a') headers.append('b', '');
+    }, [['a', '1'], ['b', '2, , '], ['c', '3']]],
     ['append-cookie', [['Set-Cookie', 'a=1'], ['set-cookie', 'b=2'], ['x-tail', 'end']], (headers, key, value) => {
       if (key === 'set-cookie' && value === 'a=1') headers.append('Set-Cookie', 'c=3');
     }, [['set-cookie', 'a=1'], ['set-cookie', 'b=2'], ['set-cookie', 'c=3'], ['x-tail', 'end']]],