diff --git a/doc/assets/Capture-txt-test.png b/doc/assets/Capture-txt-test.png
index ffc35a0..1932251 100644
Binary files a/doc/assets/Capture-txt-test.png and b/doc/assets/Capture-txt-test.png differ
diff --git a/src/drivers/gfx_cgam.asm b/src/drivers/gfx_cgam.asm
index 9292f18..e22b015 100644
--- a/src/drivers/gfx_cgam.asm
+++ b/src/drivers/gfx_cgam.asm
@@ -95,7 +95,7 @@ graph_driver:
         push    BDA_DATA_SEG
         pop     fs
 
-        mov     [fs:BDA_GFX + gfx.cur_mode], %1
+        mov     byte [fs:BDA_GFX + gfx.cur_mode], %1
 
         pop     fs
         pop     ax