diff --git a/kernel/main.asm b/kernel/main.asm
index f02d90b..cf9cba9 100644
--- a/kernel/main.asm
+++ b/kernel/main.asm
@@ -39,9 +39,17 @@ str_product:
 optrom_init:
   push cs
   pop es
+
+  mov di, isr_debug
+  mov ax, 0x1
+  call intr_register
+  mov ax, 0x3
+  call intr_register
+
   mov di, start
   mov ax, 0x18
   call intr_register
+
   retf
 
 putc: