diff --git a/src/kernel/libroot/posix/stdlib/abs.c b/src/kernel/libroot/posix/stdlib/abs.c
index 7c60ed8491..4eb885965b 100644
--- a/src/kernel/libroot/posix/stdlib/abs.c
+++ b/src/kernel/libroot/posix/stdlib/abs.c
@@ -14,12 +14,7 @@
  *
  */
 
-
-// ToDo: these are supposed to be declared in <stdlib.h>
-// - - - - - - - - - - - - - - - 
-int  abs(int);
-long labs(long);
-// - - - - - - - - - - - - - - -
+#include <stdlib.h>
 
 
 int
diff --git a/src/kernel/libroot/posix/stdlib/div.c b/src/kernel/libroot/posix/stdlib/div.c
index bbd73d6f91..2d49b39f46 100644
--- a/src/kernel/libroot/posix/stdlib/div.c
+++ b/src/kernel/libroot/posix/stdlib/div.c
@@ -14,13 +14,7 @@
  *
  */
 
-
-// ToDo: these are supposed to be declared in <stdlib.h>
-// - - - - - - - - - - - - - - -
-#include <div_t.h>
-div_t	div(int, int);
-ldiv_t	ldiv(long, long);
-// - - - - - - - - - - - - - - -
+#include <stdlib.h>
 
 
 div_t
diff --git a/src/kernel/libroot/posix/stdlib/exit.c b/src/kernel/libroot/posix/stdlib/exit.c
index e5ca94d4cd..057ef03525 100644
--- a/src/kernel/libroot/posix/stdlib/exit.c
+++ b/src/kernel/libroot/posix/stdlib/exit.c
@@ -23,14 +23,6 @@
 // ToDo: move this puppy to a more standard location
 #include "../stdio/local.h"
 
-// ToDo: these are supposed to be declared in <stdlib.h>
-// - - - - - - - - - - - - - - - 
-#define EXIT_SUCCESS  0
-#define EXIT_FAILURE  1
-void abort(void); 
-int  atexit(void (*func)(void));
-// - - - - - - - - - - - - - - - 
-
 
 
 static void (*_Exit_Stack[ATEXIT_MAX])(void) = {0};