diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 5b4e677929ca..47365150e431 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -23,6 +23,7 @@
 #include <linux/init.h>
 #include <linux/completion.h>
 #include <linux/kdebug.h>
+#include <linux/kstrtox.h>
 #include <linux/rwsem.h>
 #include <linux/errno.h>
 #include <linux/uaccess.h>