diff --git a/programs/develop/libraries/menuetlibc/src/libc/ansi/stdio/sprintf.c b/programs/develop/libraries/menuetlibc/src/libc/ansi/stdio/sprintf.c
index 9fd48b9d46..548991d686 100755
--- a/programs/develop/libraries/menuetlibc/src/libc/ansi/stdio/sprintf.c
+++ b/programs/develop/libraries/menuetlibc/src/libc/ansi/stdio/sprintf.c
@@ -2,20 +2,41 @@
 #include <stdio.h>
 #include <limits.h>
 #include <libc/file.h>
+#include <stdarg.h>
+
+int
+vsnprintf(char *str, size_t size, const char *fmt, va_list ap)
+{
+  FILE _strbuf;
+  int len;
+
+  _strbuf._flag = _IOWRT|_IOSTRG;
+  _strbuf._ptr = str;
+  _strbuf._cnt = size;
+  len = _doprnt(fmt, ap, &_strbuf);
+  *_strbuf._ptr = 0;
+  return len;
+}
+
+int
+snprintf(char *str, size_t size, const char *fmt, ...)
+{
+  int len;
+  va_list va;
+  va_start(va, fmt);
+  len = vsnprintf(str, size, fmt, va);
+  va_end(va);
+  return len;
+}
 
 int
 sprintf(char *str, const char *fmt, ...)
 {
-  FILE _strbuf;
   int len;
   va_list va;
   va_start(va, fmt);
-
-  _strbuf._flag = _IOWRT|_IOSTRG;
-  _strbuf._ptr = str;
-  _strbuf._cnt = INT_MAX;
-  len = _doprnt(fmt, va, &_strbuf);
+  len = vsnprintf(str, INT_MAX, fmt, va);
   va_end(va);
-  *_strbuf._ptr = 0;
   return len;
 }
+