diff --git a/mlibc/include/stdio.h b/mlibc/include/stdio.h
index 6850001a..5a88811f 100644
--- a/mlibc/include/stdio.h
+++ b/mlibc/include/stdio.h
@@ -24,9 +24,6 @@ char **g_environment;
 int g_stdin;
 int g_stdout;
 
-int printf (char const* format, ...);
-int sprintf (char *str, char const* format, ...);
-
 #ifndef STDIN
 #define STDIN 0
 #endif
@@ -91,16 +88,19 @@ int fdungetc (int c, int fd);
 int fdputs (char const* s, int fd);
 #endif // __MES_GNUC__
 
-int eputs (char const* s);
-int fputs (char const* s, int fd);
-int puts (char const* s);
-int putchar (int c);
-int fputc (int c, int fd);
-int getchar ();
-int ungetc (int c, int fd);
-
 typedef int FILE;
 
+int eputs (char const* s);
+int fputc (int c, int fd);
+int fputs (char const* s, int fd);
+int getchar ();
+int printf (char const* format, ...);
+int putchar (int c);
+int puts (char const* s);
+int snprintf(char *str,  size_t size,  char const *format, ...);
+int sprintf (char *str, char const* format, ...);
+int ungetc (int c, int fd);
+
 #endif // ! (__GNUC__ && POSIX)
 
 #endif // __MES_STDIO_H
diff --git a/mlibc/libc-mes+tcc.c b/mlibc/libc-mes+tcc.c
index d9310d02..f90222a8 100644
--- a/mlibc/libc-mes+tcc.c
+++ b/mlibc/libc-mes+tcc.c
@@ -54,8 +54,15 @@ memcmp (void const *s1, void const *s2, size_t n)
   return 0;
 }
 
+int
+snprintf(char *str,  size_t size,  char const *format, ...)
+{
+  return 0;
+}
+
 unsigned long
 strtoul (char const *nptr, char **endptr, int base)
 {
   return 0;
 }
+