diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index ea6b8d16dcc82efb90a8f61f8181d90608461774..9418c7a1f78665b32c980f815e789f152e973cb5 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -41,6 +41,8 @@
 #include <linux/slab.h>
 #include <linux/acpi.h>
 
+#include "internal.h"
+
 #define PREFIX "ACPI: "
 
 #define _COMPONENT			ACPI_PCI_COMPONENT