diff --git a/tests/content/test_document_compatMode.html b/tests/content/test_document_compatMode.html
deleted file mode 100644
index 92ba6644218..00000000000
--- a/tests/content/test_document_compatMode.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<html>
-    <head>
-        <script src="harness.js"></script>
-        <script>
-            // test1: BackCompat
-            {
-                is(document.compatMode, "BackCompat", "test1-0, BackCompat");
-            }
-
-            // test2: Non-parsed documents
-            {
-                var xmldoc = new Document;
-                is(xmldoc.compatMode, "CSS1Compat", "test2-0, Non-parsed documents");
-
-                var htmldoc = document.implementation.createHTMLDocument("title");
-                is(htmldoc.compatMode, "CSS1Compat", "test2-1, Non-parsed documents");
-            }
-        </script>
-    </head>
-</html>
