1 files changed, 3 insertions, 1 deletions

diff --git a/tmk_core/protocol/lufa/lufa.h b/tmk_core/protocol/lufa/lufa.h
index b11854101..a049fd43c 100644
--- a/tmk_core/protocol/lufa/lufa.h
+++ b/tmk_core/protocol/lufa/lufa.h
@@ -70,7 +70,6 @@ typedef struct {
 #ifdef MIDI_ENABLE
   void MIDI_Task(void);
   MidiDevice midi_device;
-  #define MIDI_SYSEX_BUFFER 32 
 #endif
 
 #ifdef API_ENABLE
@@ -79,6 +78,9 @@ typedef struct {
 
 #ifdef API_SYSEX_ENABLE
   #include "api_sysex.h"
+  // Allocate space for encoding overhead.
+  //The header and terminator are not stored to save a few bytes of precious ram
+  #define MIDI_SYSEX_BUFFER (API_SYSEX_MAX_SIZE + API_SYSEX_MAX_SIZE / 7 + (API_SYSEX_MAX_SIZE % 7 ? 1 : 0))
 #endif
 
 // #if LUFA_VERSION_INTEGER < 0x120730