diff --git a/main.S b/main.S
index 15f48f0..2a0f3d7 100644
--- a/main.S
+++ b/main.S
@@ -10,10 +10,10 @@
 
   .section ".rodata","a"
 screendata:
-  .byte   0x00
-  .byte   0x01
-  .byte   0x02
-  .byte   0x03
+  .byte   0b00000001
+  .byte   0b00000011
+  .byte   0b00000111
+  .byte   0b00001111
 screendataend:
   .byte   0xff
 red:
@@ -104,7 +104,7 @@ mainloop:
   ;; prepare next byte to handle by isr
   cmp.w   r7,r8
   jnz     mainloop_prepare_next_byte
-  mov.w   &screendata,r7
+  mov.w   #screendata,r7
 mainloop_prepare_next_byte:
   mov.b   @r7,r9
   inc.w   r7