diff --git a/tests/test_compatibility.py b/tests/test_compatibility.py
index 6cbeaf4aa..aa0db4570 100644
--- a/tests/test_compatibility.py
+++ b/tests/test_compatibility.py
@@ -338,6 +338,16 @@ def test_fx9_navigator_taintEnabled():
     futureCompatWarning('alert(navigator.taintEnabled);', '9.0a1')
 
 
+def test_fx9_691569():
+    """
+    baseURIObject, nodePrincipal, documentURIObject are flagged as
+    unavailable in non-chrome contexts in FX9.
+    """
+    futureCompatWarning('alert(document.documentURIObject);', '9.0a1')
+    futureCompatWarning('alert(document.nodePrincipal);', '9.0a1')
+    futureCompatWarning('alert(document.baseURIObject);', '9.0a1')
+
+
 def test_tb6_nsIImapMailFolderSink():
     """Test that nsIImapMailFolderSink.setUrlState is flagged."""
 
diff --git a/validator/testcases/regex.py b/validator/testcases/regex.py
index 0e6ad9175..f284dcee3 100644
--- a/validator/testcases/regex.py
+++ b/validator/testcases/regex.py
@@ -323,6 +323,31 @@ def _compat_test(pattern, title, message, compatibility_type=None,
                  "information, please see %s.") % TAINTENABLED_BUG,
                 compatibility_type="warning",
                 appversions=FX9_DEFINITION)
+        XRAYPROPS_BUG = BUGZILLA_BUG % 660233
+        _compat_test(
+            re.compile(r"\.nodePrincipal"),
+            ("nodePrincipal only available in chrome context"),
+            ("The nodePrincipal property is no longer accessible from "
+             "untrusted scripts. For more information, please see %s."
+             ) % XRAYPROPS_BUG,
+            compatibility_type="warning",
+            appversions=FX9_DEFINITION)
+        _compat_test(
+            re.compile(r"\.documentURIObject"),
+            ("documentURIObject only available in chrome context"),
+            ("The documentURIObject property is no longer accessible from "
+             "untrusted scripts. For more information, please see %s."
+             ) % XRAYPROPS_BUG,
+            compatibility_type="warning",
+            appversions=FX9_DEFINITION)
+        _compat_test(
+            re.compile(r"\.baseURIObject"),
+            ("baseURIObject only available in chrome context"),
+            ("The baseURIObject property is no longer accessible from "
+             "untrusted scripts. For more information, please see %s."
+             ) % XRAYPROPS_BUG,
+            compatibility_type="warning",
+            appversions=FX9_DEFINITION)
 
     # Thunderbird 7 Compatibility rdf:addressdirectory
     if err.supports_version(TB7_DEFINITION):