diff --git a/src/northbridge/intel/x4x/northbridge.c b/src/northbridge/intel/x4x/northbridge.c
index 4b5a754..c168e38 100644
--- a/src/northbridge/intel/x4x/northbridge.c
+++ b/src/northbridge/intel/x4x/northbridge.c
@@ -17,6 +17,7 @@
 #include <cbmem.h>
 #include <console/console.h>
 #include <arch/io.h>
+#include <device/pci_ops.h>
 #include <stdint.h>
 #include <device/device.h>
 #include <device/pci.h>