diff --git a/sys/compat/linuxkpi/common/include/linux/errno.h b/sys/compat/linuxkpi/common/include/linux/errno.h
--- a/sys/compat/linuxkpi/common/include/linux/errno.h
+++ b/sys/compat/linuxkpi/common/include/linux/errno.h
@@ -68,5 +68,6 @@
 #define	ENOMEDIUM	532
 #define	ENOSR		533
 #define	ELNRNG		534
+#define	ENAVAIL		535
 
 #endif					/* _LINUXKPI_LINUX_ERRNO_H_ */