diff --git a/src/tools/ebuspicloader.cpp b/src/tools/ebuspicloader.cpp
index f568c6ef0..a6829faac 100644
--- a/src/tools/ebuspicloader.cpp
+++ b/src/tools/ebuspicloader.cpp
@@ -397,6 +397,10 @@ typedef union
 #define FRAME_HEADER_LEN 9
 #define FRAME_MAX_LEN (FRAME_HEADER_LEN+2*WRITE_FLASH_BLOCKSIZE)
 #define BAUDRATE_LOW B115200
+#if !defined(B921600) && defined(__APPLE__)
+// MAC OS workaround
+#  define B921600 921600
+#endif
 #define BAUDRATE_HIGH B921600
 #define WAIT_BYTE_TRANSFERRED_MILLIS 200
 #define WAIT_BITRATE_DETECTION_MICROS 100