diff --git a/kernel/debug.asm b/kernel/debug.asm
index 57bc2fd..76fa22c 100644
--- a/kernel/debug.asm
+++ b/kernel/debug.asm
@@ -1,6 +1,6 @@
-; this kprints registers
+; this prints registers
 ; expect to be called as interrupt routine
-debug_reg_ir:
+isr_debug:
   push ss
   push es
   push ds
@@ -13,10 +13,9 @@ debug_reg_ir:
   push bx
   push ax
 
-  mov ax,cs
-  mov ds,ax
-  mov si,.fmt
-  call kprintf
+  call printf
+  db "AX=%X BX=%X CX=%X DX=%X SP=%X BP=%X SI=%X DI=%X", 0x0A, 0x0D
+  db "DS=%X ES=%X SS=%X IP=%X CS=%X FL=%X", 0x0A, 0x0D, 0
 
   pop ax
   pop bx
@@ -29,6 +28,4 @@ debug_reg_ir:
   pop ds
   pop es
   pop ss
-  iret
-.fmt:
-  db "AX=%X BX=%X CX=%X DX=%X SP=%X BP=%X SI=%X DI=%X", 0x0A, 0x0D, "DS=%X ES=%X SS=%X IP=%X CS=%X FL=%X", 0
+  iret
\ No newline at end of file