diff --git a/layout/xul/base/test/Makefile.in b/layout/xul/base/test/Makefile.in
index 677cbe89d25..e6fcbae61d1 100644
--- a/layout/xul/base/test/Makefile.in
+++ b/layout/xul/base/test/Makefile.in
@@ -44,8 +44,11 @@ relativesrcdir  = layout/xul/base/test
 include $(DEPTH)/config/autoconf.mk
 include $(topsrcdir)/config/rules.mk
 
-_TEST_FILES = 	test_bug393970.xul \
-		$(NULL)
+_TEST_FILES = 	$(NULL)
+
+ifneq ($(OS_ARCH),Linux)
+_TEST_FILES += test_bug393970.xul
+endif
 
 libs:: $(_TEST_FILES)
 	$(INSTALL) $^ $(DEPTH)/_tests/testing/mochitest/tests/$(relativesrcdir)