diff --git a/dom/tests/mochitest/ajax/offline/Makefile.in b/dom/tests/mochitest/ajax/offline/Makefile.in
index 4701386fdef..d22e26cf0a6 100644
--- a/dom/tests/mochitest/ajax/offline/Makefile.in
+++ b/dom/tests/mochitest/ajax/offline/Makefile.in
@@ -60,13 +60,8 @@ _TEST_FILES	= \
 	test_refetchManifest.html \
 	test_offlineIFrame.html \
 	test_bug445544.html \
-	test_offlineMode.html \
 	test_foreign.html \
 	test_fallback.html \
-	test_updatingManifest.html \
-	notonwhitelist.html \
-	onwhitelist.html \
-	onwhitelist.html^headers^ \
 	445544_part1.html \
 	445544_part2.html \
 	445544.cacheManifest \
@@ -107,7 +102,14 @@ _TEST_FILES	= \
 	changingManifest.cacheManifest \
 	changingManifest.cacheManifest^headers^ \
 	offlineChild.html \
-        $(NULL)
+	$(NULL)
+
+# Bug 466314 - updatingImplicit.html (used by test_offlineMode.html and test_updatingManifest.html) crashes SeaMonkey
+#	test_offlineMode.html \
+#	notonwhitelist.html \
+#	test_updatingManifest.html \
+#	onwhitelist.html \
+#	onwhitelist.html^headers^ \
 
 libs::	$(_TEST_FILES)
 	$(INSTALL) $(foreach f,$^,"$f") $(DEPTH)/_tests/testing/mochitest/tests/$(relativesrcdir)