Index: uspace/lib/posix/include/posix/string.h
===================================================================
--- uspace/lib/posix/include/posix/string.h	(revision 3f7fe9e91d327467121a08ebb9f0aca902ff737a)
+++ uspace/lib/posix/include/posix/string.h	(revision bfb11794075cbc477be69efdc4d991d5da43960c)
@@ -59,6 +59,4 @@
 extern char *stpncpy(char *__restrict__ dest, const char *__restrict__ src, size_t n);
 extern void *memccpy(void *__restrict__ dest, const void *__restrict__ src, int c, size_t n);
-extern char *strdup(const char *s);
-extern char *strndup(const char *s, size_t n);
 
 /* Search Functions */
@@ -70,7 +68,4 @@
 /* Error Messages */
 extern int strerror_r(int errnum, char *buf, size_t bufsz);
-
-/* String Length */
-extern size_t strnlen(const char *s, size_t n);
 
 /* Signal Messages */