diff --git a/programs/develop/mtdbg/gui.inc b/programs/develop/mtdbg/gui.inc
index 0eb00bd960..20dbf7b6aa 100644
--- a/programs/develop/mtdbg/gui.inc
+++ b/programs/develop/mtdbg/gui.inc
@@ -923,7 +923,6 @@ draw_fpu_register_2:
         add     al, 0x30
         stosb
         btr     eax, 16
-        stosb
 
 .skip_hb2: