diff --git a/libc/kernel/arch-sh/asm/mutex.h b/libc/kernel/arch-sh/asm/mutex.h
new file mode 100644
index 0000000..79054b2
--- /dev/null
+++ b/libc/kernel/arch-sh/asm/mutex.h
@@ -0,0 +1,12 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#include <asm-generic/mutex-dec.h>