diff --git a/bin/DMGTRIS.GBC b/bin/DMGTRIS.GBC
index b82ba01..ce7d655 100644
Binary files a/bin/DMGTRIS.GBC and b/bin/DMGTRIS.GBC differ
diff --git a/src/include/globals.asm b/src/include/globals.asm
index 8936697..c2ba887 100644
--- a/src/include/globals.asm
+++ b/src/include/globals.asm
@@ -160,6 +160,7 @@ DEF TILE_SELECTED       EQU 193
 DEF TILE_UNSELECTED     EQU 194
 DEF TILE_BLANK          EQU 1
 DEF TILE_PIECE_SMALL_0  EQU 233
+DEF TILE_PIECE_BONE     EQU 126
 
 ; Button mode.
 DEF BUTTON_MODE_NORM    EQU 0
diff --git a/src/include/hardware.inc b/src/include/hardware.inc
index 941350c..a878668 100644
--- a/src/include/hardware.inc
+++ b/src/include/hardware.inc
@@ -61,7 +61,7 @@ DEF HARDWARE_INC EQU 1
 
 
 ; Uncomment this line to build a rom with the registers scrambled for the analogue pocket.
-;DEF BUILD_POCKET EQU 1
+; DEF BUILD_POCKET EQU 1
 
 ; Usage: rev_Check_hardware_inc <min_ver>
 ; Examples: rev_Check_hardware_inc 4.1.2
diff --git a/src/res/sources/tiles.gbr b/src/res/sources/tiles.gbr
index 303c623..6a58efb 100644
Binary files a/src/res/sources/tiles.gbr and b/src/res/sources/tiles.gbr differ
diff --git a/src/res/tiles.inc b/src/res/tiles.inc
index 2c95364..4e630bc 100644
--- a/src/res/tiles.inc
+++ b/src/res/tiles.inc
@@ -272,8 +272,8 @@ Tiles::
     DB $00,$FF,$55,$FF,$FF,$FF,$00,$00
     DB $DB,$E7,$A5,$C3,$42,$81,$91,$00
     DB $42,$81,$A5,$C3,$DB,$E7,$00,$00
-    DB $00,$00,$00,$00,$00,$00,$00,$00
-    DB $00,$00,$00,$00,$00,$00,$00,$00
+    DB $FF,$FF,$FF,$99,$FF,$BD,$FF,$BD
+    DB $FF,$BD,$FF,$99,$FF,$FF,$00,$00
     DB $00,$00,$00,$00,$00,$00,$3C,$3C
     DB $00,$00,$00,$00,$00,$00,$00,$00
     DB $00,$00,$18,$18,$18,$18,$30,$30