Index: kernel/arch/ia32/include/interrupt.h
===================================================================
--- kernel/arch/ia32/include/interrupt.h	(revision cea12e9203af33ad68db110556123a714b9bc77d)
+++ kernel/arch/ia32/include/interrupt.h	(revision 3e35fd71b00303c0b9a3181c7922806e86f52ff0)
@@ -53,4 +53,5 @@
 #define IRQ_PIC1		2
 #define IRQ_PIC_SPUR	7
+#define IRQ_MOUSE		12
 
 /* this one must have four least significant bits set to ones */