diff --git a/components/script/body.rs b/components/script/body.rs
index 20c6e1052a3..ec51a7fe0ea 100644
--- a/components/script/body.rs
+++ b/components/script/body.rs
@@ -539,7 +539,7 @@ impl Extractable for FormData {
         let bytes = encode_multipart_form_data(&mut self.datums(), boundary.clone(), UTF_8);
         let total_bytes = bytes.len();
         let content_type = Some(DOMString::from(format!(
-            "multipart/form-data;boundary={}",
+            "multipart/form-data; boundary={}",
             boundary
         )));
         let stream = ReadableStream::new_from_bytes(global, bytes, can_gc)?;
diff --git a/tests/wpt/meta/fetch/api/basic/request-headers.any.js.ini b/tests/wpt/meta/fetch/api/basic/request-headers.any.js.ini
index e3b527a93a9..e9339a86d21 100644
--- a/tests/wpt/meta/fetch/api/basic/request-headers.any.js.ini
+++ b/tests/wpt/meta/fetch/api/basic/request-headers.any.js.ini
@@ -5,16 +5,10 @@
   expected: ERROR
 
 [request-headers.any.html]
-  [Fetch with POST with FormData body]
-    expected: FAIL
-
   [Fetch with POST with Float16Array body]
     expected: FAIL
 
 
 [request-headers.any.worker.html]
-  [Fetch with POST with FormData body]
-    expected: FAIL
-
   [Fetch with POST with Float16Array body]
     expected: FAIL
diff --git a/tests/wpt/meta/fetch/api/request/request-init-contenttype.any.js.ini b/tests/wpt/meta/fetch/api/request/request-init-contenttype.any.js.ini
deleted file mode 100644
index b1565a4387a..00000000000
--- a/tests/wpt/meta/fetch/api/request/request-init-contenttype.any.js.ini
+++ /dev/null
@@ -1,8 +0,0 @@
-[request-init-contenttype.any.worker.html]
-  [Default Content-Type for Request with FormData body]
-    expected: FAIL
-
-
-[request-init-contenttype.any.html]
-  [Default Content-Type for Request with FormData body]
-    expected: FAIL
diff --git a/tests/wpt/meta/fetch/api/response/response-consume.html.ini b/tests/wpt/meta/fetch/api/response/response-consume.html.ini
index 0334fb9eab6..535ac79d5dc 100644
--- a/tests/wpt/meta/fetch/api/response/response-consume.html.ini
+++ b/tests/wpt/meta/fetch/api/response/response-consume.html.ini
@@ -16,3 +16,6 @@
 
   [Consume response's body: from multipart form data blob to formData]
     expected: FAIL
+
+  [Consume response's body: from FormData to blob]
+    expected: FAIL
diff --git a/tests/wpt/meta/fetch/api/response/response-init-contenttype.any.js.ini b/tests/wpt/meta/fetch/api/response/response-init-contenttype.any.js.ini
deleted file mode 100644
index e33088cb4f4..00000000000
--- a/tests/wpt/meta/fetch/api/response/response-init-contenttype.any.js.ini
+++ /dev/null
@@ -1,8 +0,0 @@
-[response-init-contenttype.any.worker.html]
-  [Default Content-Type for Response with FormData body]
-    expected: FAIL
-
-
-[response-init-contenttype.any.html]
-  [Default Content-Type for Response with FormData body]
-    expected: FAIL
diff --git a/tests/wpt/meta/fetch/content-length/api-and-duplicate-headers.any.js.ini b/tests/wpt/meta/fetch/content-length/api-and-duplicate-headers.any.js.ini
index 446cc52f350..e4a70456126 100644
--- a/tests/wpt/meta/fetch/content-length/api-and-duplicate-headers.any.js.ini
+++ b/tests/wpt/meta/fetch/content-length/api-and-duplicate-headers.any.js.ini
@@ -6,3 +6,6 @@
 [api-and-duplicate-headers.any.worker.html]
   [XMLHttpRequest and duplicate Content-Length/Content-Type headers]
     expected: FAIL
+
+  [fetch() and duplicate Content-Length/Content-Type headers]
+    expected: FAIL
diff --git a/tests/wpt/meta/xhr/setrequestheader-content-type.htm.ini b/tests/wpt/meta/xhr/setrequestheader-content-type.htm.ini
index 70476943add..35bb7bb2a51 100644
--- a/tests/wpt/meta/xhr/setrequestheader-content-type.htm.ini
+++ b/tests/wpt/meta/xhr/setrequestheader-content-type.htm.ini
@@ -8,8 +8,5 @@
   [HTML Document request keeps setRequestHeader() Content-Type, with charset adjusted to UTF-8]
     expected: FAIL
 
-  [FormData request has correct default Content-Type of "multipart/form-data; boundary=_"]
-    expected: FAIL
-
   [URLSearchParams request keeps setRequestHeader() Content-Type, with charset adjusted to UTF-8]
     expected: FAIL