diff --git a/stage23/lib/sleep.asm b/stage23/lib/sleep.asm
index 0cc2ab5b..d1abe6ab 100644
--- a/stage23/lib/sleep.asm
+++ b/stage23/lib/sleep.asm
@@ -18,7 +18,6 @@ _pit_sleep_and_quit_on_keypress:
     ; Hook int 0x08
     mov edx, dword [0x08*4]
     mov dword [int_08_callback], edx
-    mov edx, int_08_isr
     mov dword [0x08*4], int_08_isr
 
     ; pit_ticks in edx