diff --git a/SingleSource/Benchmarks/Misc/mandel.c b/SingleSource/Benchmarks/Misc/mandel.c
index c03adc92f..a2b46dd06 100644
--- a/SingleSource/Benchmarks/Misc/mandel.c
+++ b/SingleSource/Benchmarks/Misc/mandel.c
@@ -1,50 +1,48 @@
 #define ESCAPE 2
 #ifdef SMALL_PROBLEM_SIZE
 #define IMAGE_SIZE 500
 #else
 #define IMAGE_SIZE 5000
 #endif
 #define START_X -2.0
 #define START_Y START_X
 #define MAX_ITER 10
 #define step (-START_X - START_X)/IMAGE_SIZE
 
 #define I 1.0iF
 
-#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__MINGW32__)
+#if defined(__MINGW32__)
 #include <complex.h>
-#elif defined(__APPLE__)
-#include <math.h>
 #else
-#include <tgmath.h>
+#include <math.h>
 #endif
 
 #include <stdio.h>
 
 volatile double __complex__ accum;
 void emit(double __complex__ X) {
   accum += X;
 }
 
 void mandel() {
   int x, y, n;
   for (x = 0; x < IMAGE_SIZE; ++x) {
     for (y = 0; y < IMAGE_SIZE; ++y) {
       double __complex__ c = (START_X+x*step) + (START_Y-y*step) * I;
       double __complex__ z = 0.0;
 
       for (n = 0; n < MAX_ITER; ++n) {
         z = z * z + c;
         if (hypot(__real__ z, __imag__ z) >= ESCAPE)
           break;
       }
       emit(z);
     }
   }
 }
 
 int main() {
   mandel();
   printf("%d\n", (int)accum);
   return 0;
 }