diff --git a/libc/include/sys/param.h b/libc/include/sys/param.h
new file mode 100644
index 00000000..e7744d7f
--- /dev/null
+++ b/libc/include/sys/param.h
@@ -0,0 +1,16 @@
+/* sys/param.h: Old-style BSD macros. */
+
+#ifndef _SYS_PARAM_H
+#define _SYS_PARAM_H
+
+#include <limits.h>
+
+#ifndef MIN
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#endif
+
+#ifndef MAX
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#endif
+
+#endif