diff --git a/src/cocoa_monitor.m b/src/cocoa_monitor.m
index 89580bfa..70c75aa3 100644
--- a/src/cocoa_monitor.m
+++ b/src/cocoa_monitor.m
@@ -58,7 +58,7 @@ static char* getMonitorName(CGDirectDisplayID displayID, NSScreen* screen)
     io_service_t service;
     CFDictionaryRef info;
 
-    if (IOServiceGetMatchingServices(kIOMainPortDefault,
+    if (IOServiceGetMatchingServices(MACH_PORT_NULL,
                                      IOServiceMatching("IODisplayConnect"),
                                      &it) != 0)
     {
@@ -231,7 +231,7 @@ static double getFallbackRefreshRate(CGDirectDisplayID displayID)
     io_iterator_t it;
     io_service_t service;
 
-    if (IOServiceGetMatchingServices(kIOMainPortDefault,
+    if (IOServiceGetMatchingServices(MACH_PORT_NULL,
                                      IOServiceMatching("IOFramebuffer"),
                                      &it) != 0)
     {
diff --git a/src/cocoa_platform.h b/src/cocoa_platform.h
index ed4ffc12..67c1a3cc 100644
--- a/src/cocoa_platform.h
+++ b/src/cocoa_platform.h
@@ -41,13 +41,6 @@
 typedef void* id;
 #endif
 
-// NOTE: Many Cocoa enum values have been renamed and we need to build across
-//       SDK versions where one is unavailable or the other deprecated
-//       We use the newer names in code and these macros to handle compatibility
-#if MAC_OS_X_VERSION_MAX_ALLOWED < 120000
- #define kIOMainPortDefault kIOMasterPortDefault
-#endif
-
 // NOTE: Many Cocoa enum values have been renamed and we need to build across
 //       SDK versions where one is unavailable or the other deprecated
 //       We use the newer names in code and these macros to handle compatibility