diff --git a/drivers/staging/wilc1000/wilc_sdio.c b/drivers/staging/wilc1000/wilc_sdio.c
index 6da65e88c345..6e28ca08288b 100644
--- a/drivers/staging/wilc1000/wilc_sdio.c
+++ b/drivers/staging/wilc1000/wilc_sdio.c
@@ -7,6 +7,7 @@
 /*  */
 /* //////////////////////////////////////////////////////////////////////////// */
 
+#include <linux/string.h>
 #include "wilc_wlan_if.h"
 #include "wilc_wlan.h"
 
diff --git a/drivers/staging/wilc1000/wilc_spi.c b/drivers/staging/wilc1000/wilc_spi.c
index f7627701fb35..0e06fc204c81 100644
--- a/drivers/staging/wilc1000/wilc_spi.c
+++ b/drivers/staging/wilc1000/wilc_spi.c
@@ -7,6 +7,7 @@
 /*  */
 /* //////////////////////////////////////////////////////////////////////////// */
 
+#include <linux/string.h>
 #include "wilc_wlan_if.h"
 #include "wilc_wlan.h"
 
diff --git a/drivers/staging/wilc1000/wilc_wlan_cfg.c b/drivers/staging/wilc1000/wilc_wlan_cfg.c
index 73a15082ac3f..d761a372eeea 100644
--- a/drivers/staging/wilc1000/wilc_wlan_cfg.c
+++ b/drivers/staging/wilc1000/wilc_wlan_cfg.c
@@ -7,6 +7,7 @@
 /*  */
 /* ///////////////////////////////////////////////////////////////////////// */
 
+#include <linux/string.h>
 #include "wilc_wlan_if.h"
 #include "wilc_wlan.h"
 #include "wilc_wlan_cfg.h"