diff --git a/drivers/pci/hotplug/cpcihp_generic.c b/drivers/pci/hotplug/cpcihp_generic.c
index a62a434..2d4639d6 100644
--- a/drivers/pci/hotplug/cpcihp_generic.c
+++ b/drivers/pci/hotplug/cpcihp_generic.c
@@ -39,6 +39,7 @@
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/pci.h>
+#include <linux/string.h>
 #include "cpci_hotplug.h"
 
 #define DRIVER_VERSION	"0.1"