diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 6b363a5..a8d8998 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -32,7 +32,7 @@
 #
 acpi-y				+= bus.o glue.o
 acpi-y				+= scan.o
-acpi-y				+= processor_pdc.o
+acpi-y				+= processor_core.o
 acpi-y				+= ec.o
 acpi-$(CONFIG_ACPI_DOCK)	+= dock.o
 acpi-y				+= pci_root.o pci_link.o pci_irq.o pci_bind.o