diff --git a/Subsystems/cmdUtil/cmdUtil.c b/Subsystems/cmdUtil/cmdUtil.c
index 08de7f1..531941f 100644
--- a/Subsystems/cmdUtil/cmdUtil.c
+++ b/Subsystems/cmdUtil/cmdUtil.c
@@ -31,7 +31,28 @@
  */
 #include <stdio.h>
 #include <stdlib.h>
+#ifndef __APPLE__
 #include <endian.h>
+#else
+#include <libkern/OSByteOrder.h>
+
+#define htobe16(x) OSSwapHostToBigInt16(x)
+#define htole16(x) OSSwapHostToLittleInt16(x)
+#define be16toh(x) OSSwapBigToHostInt16(x)
+#define le16toh(x) OSSwapLittleToHostInt16(x)
+
+#define htobe32(x) OSSwapHostToBigInt32(x)
+#define htole32(x) OSSwapHostToLittleInt32(x)
+#define be32toh(x) OSSwapBigToHostInt32(x)
+#define le32toh(x) OSSwapLittleToHostInt32(x)
+
+#define htobe64(x) OSSwapHostToBigInt64(x)
+#define htole64(x) OSSwapHostToLittleInt64(x)
+#define be64toh(x) OSSwapBigToHostInt64(x)
+#define le64toh(x) OSSwapLittleToHostInt64(x)
+
+#endif
+
 #include <getopt.h>
 #include <string.h>
 #include <stdbool.h>