diff --git a/audio/audiality2/Makefile b/audio/audiality2/Makefile
index be85ab21cbb..dd2ceec85a1 100644
--- a/audio/audiality2/Makefile
+++ b/audio/audiality2/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.1.1.1 2017/08/06 21:55:01 bentley Exp $
+# $OpenBSD: Makefile,v 1.2 2017/12/20 20:26:33 jca Exp $
 
 COMMENT =	realtime audio and music engine for games
 
@@ -23,6 +23,11 @@ PERMIT_DISTFILES_FTP =	test/data/*.a2s are all rights reserved
 
 WANTLIB += c SDL2 m
 
+COMPILER =	base-clang ports-gcc base-gcc
+COMPILER_LANGS = c
+# __sync_bool_compare_and_swap_4
+MODGCC4_ARCHS =	arm
+
 MODULES =		devel/cmake
 LIB_DEPENDS =		devel/sdl2