diff --git a/sys/compat/linuxkpi/common/include/linux/nospec.h b/sys/compat/linuxkpi/common/include/linux/nospec.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/nospec.h
@@ -0,0 +1,8 @@
+/* Public domain. */
+
+#ifndef	_LINUXKPI_LINUX_NOSPEC_H_
+#define	_LINUXKPI_LINUX_NOSPEC_H_
+
+#define	array_index_nospec(a, b)	(a)
+
+#endif	/* _LINUXKPILINUX_NOSPEC_H_ */