--- a/calendar/test/unit/xpcshell-shared.ini
+++ b/calendar/test/unit/xpcshell-shared.ini
@@ -16,16 +16,17 @@
 [test_bug523860.js]
 [test_bug653924.js]
 [test_bug668222.js]
 [test_bug759324.js]
 [test_calmgr.js]
 [test_calutils.js]
 [test_calitiputils.js]
 [test_datetime.js]
+skip-if = true # See bug 1424350.
 [test_datetime_before_1970.js]
 [test_datetimeformatter.js]
 [test_deleted_items.js]
 [test_duration.js]
 [test_extract.js]
 [test_freebusy.js]
 [test_freebusy_service.js]
 [test_gdata_provider.js]