Index: meson/arch/ia32/meson.build
===================================================================
--- meson/arch/ia32/meson.build	(revision 50c8e72f239c9c7f3e60c846594d095051bbd29f)
+++ meson/arch/ia32/meson.build	(revision 7eec25fcc916d12889b4ae19ba7f3e78678be3dd)
@@ -36,6 +36,5 @@
 
 arch_uspace_c_args = [
-	# FIXME: enabling -march for uspace makes malloc tests crash. Investigate.
-	# _march,
+	_march,
 	'-D__LE__',
 	'-mno-tls-direct-seg-refs',