diff --git a/libraries/AP_HAL_SITL/Scheduler.cpp b/libraries/AP_HAL_SITL/Scheduler.cpp
index 748ac7a229..3d9b4efaf9 100644
--- a/libraries/AP_HAL_SITL/Scheduler.cpp
+++ b/libraries/AP_HAL_SITL/Scheduler.cpp
@@ -9,7 +9,6 @@
 #include <sys/time.h>
 #include <unistd.h>
 #include <fenv.h>
-#include "fenv_polyfill.h"
 
 using namespace HALSITL;
 
diff --git a/libraries/AP_HAL_SITL/fenv_polyfill.h b/libraries/AP_HAL_SITL/fenv_polyfill.h
deleted file mode 100644
index 6c3ef1be71..0000000000
--- a/libraries/AP_HAL_SITL/fenv_polyfill.h
+++ /dev/null
@@ -1,27 +0,0 @@
-#pragma once
-
-#if (defined __APPLE__) && (defined(__i386__) || defined(__x86_64__))
-
-#include <fenv.h>
-
-// Public domain polyfill for feenableexcept on OS X
-// http://www-personal.umich.edu/~williams/archive/computation/fe-handling-example.c
-
-inline int
-feenableexcept (unsigned int excepts)
-{
-  static fenv_t fenv;
-  unsigned int new_excepts = excepts & FE_ALL_EXCEPT,
-               old_excepts;  // previous masks
-
-  if ( fegetenv (&fenv) ) return -1;
-  old_excepts = fenv.__control & FE_ALL_EXCEPT;
-
-  // unmask
-  fenv.__control &= ~new_excepts;
-  fenv.__mxcsr   &= ~(new_excepts << 7);
-
-  return ( fesetenv (&fenv) ? -1 : old_excepts );
-}
-
-#endif // APPLE