Index: uspace/lib/posix/include/posix/stddef.h
===================================================================
--- uspace/lib/posix/include/posix/stddef.h	(revision d6c98451488403ad65ddbaaa4ca9466fba069a73)
+++ uspace/lib/posix/include/posix/stddef.h	(revision a955fccc48da56c66c06fc89b21e01671d0bfc4e)
@@ -48,7 +48,4 @@
 #define offsetof(type,member) ((size_t) &(((type *) 0)->member))
 
-typedef ssize_t __POSIX_DEF__(ptrdiff_t);
-
-
 #endif /* POSIX_STDDEF_H_ */