diff --git a/extern/rtmidi/RtMidi.cpp b/extern/rtmidi/RtMidi.cpp
index 8958e6cc..b54da7e1 100644
--- a/extern/rtmidi/RtMidi.cpp
+++ b/extern/rtmidi/RtMidi.cpp
@@ -40,6 +40,7 @@
 #include "RtMidi.h"
 #include <sstream>
 
+#ifdef TARGET_OS_IPHONE
 #if (TARGET_OS_IPHONE == 1)
 
     #define AudioGetCurrentHostTime CAHostTimeBase::GetCurrentTime
@@ -66,6 +67,7 @@
   #define EndianS32_BtoN(n) n
 
 #endif
+#endif
 
 // Default for Windows is to add an identifier to the port names; this
 // flag can be defined (e.g. in your project file) to disable this behaviour.
@@ -814,7 +816,7 @@ MidiOutApi :: ~MidiOutApi( void )
 // time values.
 
 // These are not available on iOS.
-#if (TARGET_OS_IPHONE == 0)
+#ifdef TARGET_OS_IPHONE
   #include <CoreAudio/HostTime.h>
   #include <CoreServices/CoreServices.h>
 #endif