diff --git a/src/engine/audio/Audio_Interface.cpp b/src/engine/audio/Audio_Interface.cpp
index c8a7944f..e1844c95 100644
--- a/src/engine/audio/Audio_Interface.cpp
+++ b/src/engine/audio/Audio_Interface.cpp
@@ -25,7 +25,7 @@
 using namespace Audio;
 
 Device::Device()
-:mConnection(nullptr)
+    :mConnection(nullptr)
 {
 }
 
@@ -36,12 +36,12 @@ Device::~Device()
 
 void Device::setConnection(DataConnection* connection)
 {
-  mConnection = connection;
+    mConnection = connection;
 }
 
 DataConnection* Device::connection()
 {
-  return mConnection;
+    return mConnection;
 }
 
 InputDevice::InputDevice()
@@ -55,20 +55,20 @@ InputDevice::~InputDevice()
 InputDevice* InputDevice::make(int devId)
 {
 #if defined(USE_NULL_AUDIO)
-  return new NullInputDevice();
+    return new NullInputDevice();
 #else
-  #if defined(TARGET_WIN) && defined(_MSC_VER)
+#if defined(TARGET_WIN) && defined(_MSC_VER)
     // return new WmmeInputDevice(index);
     return new DSoundInputDevice(DSoundHelper::deviceId2Guid(devId, true));
-  #endif
-  #ifdef TARGET_OSX
-    return new MacInputDevice(devId);
-  #endif
-  #ifdef TARGET_ANDROID
-    return new AndroidInputDevice(devId);
-  #endif
 #endif
-  return nullptr;
+#ifdef TARGET_OSX
+    return new MacInputDevice(devId);
+#endif
+#ifdef TARGET_ANDROID
+    return new AndroidInputDevice(devId);
+#endif
+#endif
+    return nullptr;
 }
 
 OutputDevice::OutputDevice()
@@ -82,20 +82,20 @@ OutputDevice::~OutputDevice()
 OutputDevice* OutputDevice::make(int devId)
 {
 #if defined(USE_NULL_AUDIO)
-  return new NullOutputDevice();
+    return new NullOutputDevice();
 #else
-  #if defined(TARGET_WIN)
+#if defined(TARGET_WIN)
     //return new WmmeOutputDevice(index);
     return new DSoundOutputDevice(DSoundHelper::deviceId2Guid(devId, false));
-  #endif
-  #ifdef TARGET_OSX
-    return new MacOutputDevice(devId);
-  #endif
-  #ifdef TARGET_ANDROID
-    return new AndroidOutputDevice(devId);
-  #endif
 #endif
-  return nullptr;
+#ifdef TARGET_OSX
+    return new MacOutputDevice(devId);
+#endif
+#ifdef TARGET_ANDROID
+    return new AndroidOutputDevice(devId);
+#endif
+#endif
+    return nullptr;
 }
 
 
@@ -110,31 +110,31 @@ Enumerator::~Enumerator()
 
 int Enumerator::nameToIndex(const std::tstring& name)
 {
-  for (int i = 0; i < count(); i++)
-    if (nameAt(i) == name)
-      return i;
-  return -1;
+    for (int i = 0; i < count(); i++)
+        if (nameAt(i) == name)
+            return i;
+    return -1;
 }
 
 
 Enumerator* Enumerator::make(bool useNull)
 {
 
-  if (useNull)
-    return new NullEnumerator();
+    if (useNull)
+        return new NullEnumerator();
 #ifndef USE_NULL_AUDIO
 
- #ifdef TARGET_WIN
-  if (winVersion() > Win_Xp)
-    return new VistaEnumerator();
-  else
-    return new XpEnumerator();
-  #endif
-  #ifdef TARGET_OSX
-    return new MacEnumerator();
-  #endif
+#ifdef TARGET_WIN
+    if (winVersion() > Win_Xp)
+        return new VistaEnumerator();
+    else
+        return new XpEnumerator();
 #endif
-  return new NullEnumerator();
+#ifdef TARGET_OSX
+    return new MacEnumerator();
+#endif
+#endif
+    return new NullEnumerator();
 }
 
 // ----- OsEngine ------------
@@ -142,12 +142,12 @@ Enumerator* Enumerator::make(bool useNull)
 OsEngine* OsEngine::instance()
 {
 #ifdef USE_NULL_AUDIO
-  return nullptr;
+    return nullptr;
 #endif
 
 #ifdef TARGET_ANDROID
-  return &OpenSLEngine::instance();
+    return &OpenSLEngine::instance();
 #endif
 
-  return nullptr;
+    return nullptr;
 }