diff --git a/main.S b/main.S
index f763f54..26a1ca5 100644
--- a/main.S
+++ b/main.S
@@ -35,23 +35,8 @@ main:
     sei                 ; global interrupt enable
 
 1:
-    sbi IO(PORTB), 5
-    ldi r18, 0
-2:
-    dec r18
-    brne 2b
-
-    cbi IO(PORTB), 5
-
-    ldi r18, 0
-3:
-    dec r18
-    brne 3b
-
     rjmp 1b
 
-    jmp .
-
 .global int_horizontal_sync
 int_horizontal_sync:
     push r31