diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index ec73fde44b22..38136c5eb313 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -2243,8 +2243,11 @@ static long fuse_dev_ioctl(struct file *file, unsigned int cmd,
 	struct fuse_dev *fud = NULL;
 	struct fuse_passthrough_out pto;
 
-	switch (cmd) {
-	case FUSE_DEV_IOC_CLONE:
+	if (_IOC_TYPE(cmd) != FUSE_DEV_IOC_MAGIC)
+		return -ENOTTY;
+
+	switch (_IOC_NR(cmd)) {
+	case _IOC_NR(FUSE_DEV_IOC_CLONE):
 		res = -EFAULT;
 		if (!get_user(oldfd, (__u32 __user *)arg)) {
 			struct file *old = fget(oldfd);