diff --git a/radio/src/CMakeLists.txt b/radio/src/CMakeLists.txt
index dd2cbc30e..1553e22fe 100644
--- a/radio/src/CMakeLists.txt
+++ b/radio/src/CMakeLists.txt
@@ -59,6 +59,7 @@ else()
   option(USBJ_EX "Enable USB Joystick Extension" ON)
 endif()
 option(AUDIO "Enable audio" ON)
+option(EXFAT "Enable exFAT filesystem support in FatFs" OFF)
 
 if(NATIVE_BUILD)
   option(ALL_LANGUAGES "Enable runtime language selection" ON)
diff --git a/radio/src/hal/CMakeLists.txt b/radio/src/hal/CMakeLists.txt
index b223aa5fb..589d1e8cd 100644
--- a/radio/src/hal/CMakeLists.txt
+++ b/radio/src/hal/CMakeLists.txt
@@ -27,6 +27,10 @@ endif()
 
 include_directories(${FATFS_DIR} ${FATFS_DIR}/option)
 
+if(EXFAT)
+  add_definitions(-DFF_FS_EXFAT=1)
+endif()
+
 set(BOOTLOADER_SRC ${BOOTLOADER_SRC}
   ${CMAKE_CURRENT_SOURCE_DIR}/hal/key_driver.cpp
 )
diff --git a/radio/src/thirdparty/FatFs/ffconf.h b/radio/src/thirdparty/FatFs/ffconf.h
index 69d72880f..014fce51f 100644
--- a/radio/src/thirdparty/FatFs/ffconf.h
+++ b/radio/src/thirdparty/FatFs/ffconf.h
@@ -238,7 +238,9 @@
 /  buffer in the filesystem object (FATFS) is used for the file data transfer. */
 
 
+#ifndef FF_FS_EXFAT
 #define FF_FS_EXFAT		0
+#endif
 /* This option switches support for exFAT filesystem. (0:Disable or 1:Enable)
 /  To enable exFAT, also LFN needs to be enabled. (FF_USE_LFN >= 1)
 /  Note that enabling exFAT discards ANSI C (C89) compatibility. */