diff --git a/Libraries/LibC/sys/types.h b/Libraries/LibC/sys/types.h
index c9b1edad1e..cda19da382 100644
--- a/Libraries/LibC/sys/types.h
+++ b/Libraries/LibC/sys/types.h
@@ -6,6 +6,8 @@
 
 __BEGIN_DECLS
 
+typedef unsigned char u_char;
+typedef unsigned short u_short;
 typedef unsigned int u_int;
 typedef unsigned long u_long;