diff --git a/programs/develop/ktcc/trunk/libc.obj/include/stdlib.h b/programs/develop/ktcc/trunk/libc.obj/include/stdlib.h
index bd868f070..486064820 100644
--- a/programs/develop/ktcc/trunk/libc.obj/include/stdlib.h
+++ b/programs/develop/ktcc/trunk/libc.obj/include/stdlib.h
@@ -8,6 +8,9 @@
 #define NULL ((void*)0)
 #endif
 
+#define EXIT_SUCCESS 0 // Successful execution of a program
+#define EXIT_FAILURE 1 // Unsuccessful execution of a program
+
 #define min(a, b) ((a) < (b) ? (a) : (b))
 #define max(a, b) ((a) > (b) ? (a) : (b))
 
diff --git a/programs/develop/ktcc/trunk/libc.obj/samples/whois.c b/programs/develop/ktcc/trunk/libc.obj/samples/whois.c
index 88efc8f6f..477972826 100644
--- a/programs/develop/ktcc/trunk/libc.obj/samples/whois.c
+++ b/programs/develop/ktcc/trunk/libc.obj/samples/whois.c
@@ -19,9 +19,6 @@ FILE* out = stdout;
 FILE* out = stderr;
 #endif
 
-#define EXIT_SUCCESS 0
-#define EXIT_FAILURE 1
-
 #define fprintf fprintf
 
 void show_help()