diff --git a/libc/isystem/stdnoreturn.h b/libc/isystem/stdnoreturn.h
new file mode 100644
index 000000000..45dd3dcc2
--- /dev/null
+++ b/libc/isystem/stdnoreturn.h
@@ -0,0 +1,15 @@
+#ifndef LIBC_ISYSTEM_STDNORETURN_H_
+#define LIBC_ISYSTEM_STDNORETURN_H_
+
+#if !(__ASSEMBLER__ + __LINKER__ + 0)
+#if __STDC_VERSION__ + 0 >= 201112
+COSMOPOLITAN_C_START_
+
+#define noreturn _Noreturn
+
+COSMOPOLITAN_C_END_
+
+#endif /* C11 */
+#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
+
+#endif