diff --git a/sys/compat/linux/linux_ioctl.c b/sys/compat/linux/linux_ioctl.c
index c4edaee1abc..d33ddd2bab8 100644
--- a/sys/compat/linux/linux_ioctl.c
+++ b/sys/compat/linux/linux_ioctl.c
@@ -3593,6 +3593,7 @@ linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
 
 	switch (args->cmd & 0xffff) {
 	case LINUX_BTRFS_IOC_CLONE:
+	case LINUX_FS_IOC_FIEMAP:
 		return (ENOTSUP);
 
 	default:
diff --git a/sys/compat/linux/linux_ioctl.h b/sys/compat/linux/linux_ioctl.h
index 519f55e6c16..e529f649496 100644
--- a/sys/compat/linux/linux_ioctl.h
+++ b/sys/compat/linux/linux_ioctl.h
@@ -749,6 +749,7 @@
  * Linux btrfs clone operation
  */
 #define LINUX_BTRFS_IOC_CLONE		0x9409 /* 0x40049409 */
+#define LINUX_FS_IOC_FIEMAP		0x660b
 
 /*
  * Linux evdev ioctl min and max