diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 9837adcb17e940478568fa33e89e194508c1cad1..5fc4019956ba2ffe17b2d5dda04206aa7b5d9a4d 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -743,7 +743,7 @@ static int hiddev_ioctl(struct inode *inode, struct file *file, unsigned int cmd
 static long hiddev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	struct inode *inode = file->f_path.dentry->d_inode;
-	return hiddev_ioctl(inode, file, cmd, compat_ptr(arg));
+	return hiddev_ioctl(inode, file, cmd, (unsigned long)compat_ptr(arg));
 }
 #endif