Index: uspace/lib/posix/include/posix/limits.h
===================================================================
--- uspace/lib/posix/include/posix/limits.h	(revision 10d65d70906a865fb116576edc88e47ab61a5fb4)
+++ uspace/lib/posix/include/posix/limits.h	(revision f0f87879a2e9616ccbf28e95d70d5e6ec25cf738)
@@ -36,8 +36,9 @@
 #define POSIX_LIMITS_H_
 
-#include <libc/limits.h>
+#include_next <limits.h>
 
-#undef PATH_MAX
+#ifndef PATH_MAX
 #define PATH_MAX 256
+#endif
 
 #endif /* POSIX_LIMITS_H_ */