diff --git a/utility/mcufriend_shield.h b/utility/mcufriend_shield.h
index a1bf0c1..38b7250 100644
--- a/utility/mcufriend_shield.h
+++ b/utility/mcufriend_shield.h
@@ -1,4 +1,4 @@
-#define USE_SPECIAL             //check for custom drivers
+//#define USE_SPECIAL             //check for custom drivers
 #if defined(USE_SPECIAL)
 #include "mcufriend_special.h"
 #if !defined(USE_SPECIAL_FAIL)
diff --git a/utility/mcufriend_special.h b/utility/mcufriend_special.h
index 1df65a8..35e2b56 100644
--- a/utility/mcufriend_special.h
+++ b/utility/mcufriend_special.h
@@ -7,7 +7,7 @@
 //#define USE_MEGA_8BIT_SHIELD      // 4.7sec Mega2560 Shield
 //#define USE_MEGA_16BIT_SHIELD     // 2.14sec Mega2560 Shield 
 //#define USE_BLD_BST_MEGA32U4
-#define USE_BLD_BST_MEGA2560      // 12.23sec Uno Shield (17.38s C)
+//#define USE_BLD_BST_MEGA2560      // 12.23sec Uno Shield (17.38s C)
 //#define USE_DUE_8BIT_PROTOSHIELD
 //#define USE_DUE_16BIT_SHIELD        //RD on PA15 (D24) 
 //#define USE_BOBCACHELOT_TEENSY