diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c
index 8cd58e412b5eae2cfe3188a03f616190146f8db0..5ad44daef73bdf5ea54eac6e5885c068042d7dd1 100644
--- a/drivers/s390/char/keyboard.c
+++ b/drivers/s390/char/keyboard.c
@@ -460,7 +460,8 @@ kbd_ioctl(struct kbd_data *kbd, struct file *file,
 	  unsigned int cmd, unsigned long arg)
 {
 	void __user *argp;
-	int ct, perm;
+	unsigned int ct;
+	int perm;
 
 	argp = (void __user *)arg;