diff --git a/programs/develop/mtdbg/gui.inc b/programs/develop/mtdbg/gui.inc
index fdeed78832..c732f30891 100644
--- a/programs/develop/mtdbg/gui.inc
+++ b/programs/develop/mtdbg/gui.inc
@@ -12,7 +12,7 @@ WHITE_ON_BLACK  = 2
 ;-----------------------------------------------------------------------------
 ;                                Font
 
-FONT            equ 0           ; 0 to 3
+FONT            equ 1           ; 0 to 3
 FONT_MULTIPLIER equ 1           ; 1 to 8
 
 ;-----------------------------------------------------------------------------