diff --git a/headers/private/kernel/arch/x86/apic.h b/headers/private/kernel/arch/x86/apic.h
index e1ff1fa685..e53ffe6483 100644
--- a/headers/private/kernel/arch/x86/apic.h
+++ b/headers/private/kernel/arch/x86/apic.h
@@ -105,12 +105,6 @@
 #define IOAPIC_VERSION			0x1
 #define IOAPIC_ARB				0x2
 #define IOAPIC_REDIR_TABLE		0x10
-
-#define IPI_CACHE_FLUSH			0x40
-#define IPI_INV_TLB				0x41
-#define IPI_INV_PTE				0x42
-#define IPI_INV_RESCHED			0x43
-#define IPI_STOP				0x44
 */
 
 bool		apic_available();