diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6a01457c..9620b8fe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,6 +16,8 @@
 cmake_minimum_required(VERSION 3.10)
 project(reone)
 
+set (CMAKE_CXX_STANDARD 14)
+
 add_subdirectory(src/external/s3tc)
 
 option(BUILD_TOOLS "build tools executable" ON)
diff --git a/src/engine/audio/player.cpp b/src/engine/audio/player.cpp
index 7b4e0714..b2110122 100644
--- a/src/engine/audio/player.cpp
+++ b/src/engine/audio/player.cpp
@@ -23,7 +23,11 @@
 
 #include "glm/gtx/norm.hpp"
 
+#if __APPLE__
+#include "OpenAL/al.h"
+#else
 #include "AL/al.h"
+#endif
 
 #include "../common/log.h"
 #include "../common/guardutil.h"
diff --git a/src/engine/audio/player.h b/src/engine/audio/player.h
index 19b688fd..9d4c9306 100644
--- a/src/engine/audio/player.h
+++ b/src/engine/audio/player.h
@@ -27,7 +27,11 @@
 
 #include <boost/noncopyable.hpp>
 
+#if __APPLE__
+#include "OpenAL/alc.h"
+#else
 #include "AL/alc.h"
+#endif
 
 #include "glm/vec3.hpp"
 
diff --git a/src/engine/audio/soundinstance.cpp b/src/engine/audio/soundinstance.cpp
index a937e756..afde312f 100644
--- a/src/engine/audio/soundinstance.cpp
+++ b/src/engine/audio/soundinstance.cpp
@@ -20,7 +20,11 @@
 #include <stdexcept>
 #include <utility>
 
+#if __APPLE__
+#include "OpenAL/al.h"
+#else
 #include "AL/al.h"
+#endif
 
 #include "../common/log.h"
 
diff --git a/src/engine/audio/stream.cpp b/src/engine/audio/stream.cpp
index dd01200b..3fb07a8d 100644
--- a/src/engine/audio/stream.cpp
+++ b/src/engine/audio/stream.cpp
@@ -20,7 +20,11 @@
 #include <stdexcept>
 #include <string>
 
+#if __APPLE__
+#include "OpenAL/al.h"
+#else
 #include "AL/al.h"
+#endif
 
 using namespace std;