diff --git a/src/mainboard/winent/mb6047/acpi_tables.c b/src/mainboard/winent/mb6047/acpi_tables.c
index 2b1084cebc..fdf2d80f0a 100644
--- a/src/mainboard/winent/mb6047/acpi_tables.c
+++ b/src/mainboard/winent/mb6047/acpi_tables.c
@@ -13,12 +13,8 @@
 #include <arch/acpi.h>
 #include <arch/smp/mpspec.h>
 #include <device/pci.h>
-#include <device/pci_ids.h>
-#include <cpu/x86/msr.h>
-#include <cpu/amd/mtrr.h>
 #include <cpu/amd/amdk8_sysconf.h>
-#include "northbridge/amd/amdk8/acpi.h"
-#include <cpu/amd/powernow.h>
+#include <assert.h>
 
 /* APIC */
 unsigned long acpi_fill_madt(unsigned long current)