diff --git a/mozilla/content/xml/tests/docbooktest.xml b/mozilla/content/xml/tests/docbooktest.xml
index 75a9fa8d089..c51d434ff78 100644
--- a/mozilla/content/xml/tests/docbooktest.xml
+++ b/mozilla/content/xml/tests/docbooktest.xml
@@ -6,9 +6,6 @@ Inc.</Title>
 <p xmlns="http://www.w3.org/TR/REC-html40" xmlns:h="http://www.w3.org/TR/REC-html40">
 <h:img src="flamer.gif"/>
 <img src="flamer.gif"/>
-<button>
-<h1>Some text</h1>
-</button>
 </p>
 <BookInfo> <BookBiblio> <Title>Demo Product Documentation</Title>
 <AuthorGroup><CorpAuthor>SoftQuad Inc.</CorpAuthor></AuthorGroup> 
diff --git a/mozilla/layout/xml/tests/docbooktest.xml b/mozilla/layout/xml/tests/docbooktest.xml
index 75a9fa8d089..c51d434ff78 100644
--- a/mozilla/layout/xml/tests/docbooktest.xml
+++ b/mozilla/layout/xml/tests/docbooktest.xml
@@ -6,9 +6,6 @@ Inc.</Title>
 <p xmlns="http://www.w3.org/TR/REC-html40" xmlns:h="http://www.w3.org/TR/REC-html40">
 <h:img src="flamer.gif"/>
 <img src="flamer.gif"/>
-<button>
-<h1>Some text</h1>
-</button>
 </p>
 <BookInfo> <BookBiblio> <Title>Demo Product Documentation</Title>
 <AuthorGroup><CorpAuthor>SoftQuad Inc.</CorpAuthor></AuthorGroup>