diff --git a/testing/web-platform/tests/xhr/send-content-type-charset.htm b/testing/web-platform/tests/xhr/send-content-type-charset.htm
index b409e98f9c383..621d6a11404d9 100644
--- a/testing/web-platform/tests/xhr/send-content-type-charset.htm
+++ b/testing/web-platform/tests/xhr/send-content-type-charset.htm
@@ -63,168 +63,6 @@
 script
 >
 <
-link
-rel
-=
-"
-help
-"
-href
-=
-"
-https
-:
-/
-/
-xhr
-.
-spec
-.
-whatwg
-.
-org
-/
-#
-the
--
-send
-(
-)
--
-method
-"
-data
--
-tested
--
-assertations
-=
-"
-following
-:
-:
-ol
-[
-1
-]
-/
-li
-[
-4
-]
-/
-p
-/
-code
-[
-contains
-(
-text
-(
-)
-'
-Content
--
-Type
-'
-)
-]
-/
-.
-.
-following
-:
-:
-ol
-[
-1
-]
-/
-li
-[
-4
-]
-/
-p
-/
-code
-[
-contains
-(
-text
-(
-)
-'
-Content
--
-Type
-'
-)
-]
-/
-.
-.
-/
-following
--
-sibling
-:
-:
-p
-"
-/
->
-<
-link
-rel
-=
-"
-help
-"
-href
-=
-"
-https
-:
-/
-/
-xhr
-.
-spec
-.
-whatwg
-.
-org
-/
-#
-dom
--
-XMLHttpRequest
--
-send
--
-a
--
-string
-"
-data
--
-tested
--
-assertations
-=
-"
-following
-:
-:
-p
-[
-2
-]
-"
-/
->
-<
 /
 head
 >
@@ -472,18 +310,29 @@
 ;
 charset
 =
-UTF
+utf
 -
 8
 "
 "
-Correct
-text
-/
-plain
-MIME
-with
+If
 charset
+=
+param
+is
+UTF
+-
+8
+(
+case
+-
+insensitive
+)
+it
+should
+not
+be
+changed
 "
 )
 request
@@ -661,20 +510,34 @@
 ;
 charset
 =
-UTF
+utf
 -
 8
+;
+charset
+=
+waddup
 "
 "
+If
 charset
-given
-but
-wrong
-fix
+=
+param
+is
+UTF
+-
+8
+(
+case
+-
+insensitive
+)
 it
+should
+not
+be
+changed
 (
-known
-MIME
 bogus
 charset
 )
@@ -763,6 +626,11 @@
 "
 "
 Multiple
+non
+-
+UTF
+-
+8
 charset
 parameters
 deduplicate
@@ -816,7 +684,7 @@
 ;
 charset
 =
-UTF
+utf
 -
 8
 "
@@ -824,6 +692,14 @@
 charset
 with
 space
+that
+is
+UTF
+-
+8
+does
+not
+change
 "
 )
 request
@@ -850,15 +726,27 @@
 ;
 charset
 =
-UTF
+\
+"
+utf
 -
 8
+\
+"
 "
 "
 charset
 in
 double
 quotes
+that
+is
+UTF
+-
+8
+does
+not
+change
 "
 )
 request
@@ -928,9 +816,19 @@
 ;
 charset
 =
-UTF
+\
+"
+u
+\
+\
+t
+\
+\
+f
 -
 8
+\
+"
 "
 "
 charset
@@ -939,6 +837,14 @@
 quotes
 with
 backslashes
+that
+is
+UTF
+-
+8
+does
+not
+change
 "
 )
 request