1 files changed, 2 insertions, 0 deletions
diff --git a/newlib/libc/stdio/vscanf.c b/newlib/libc/stdio/vscanf.c
index 59c63738a..e494aaf60 100644
--- a/newlib/libc/stdio/vscanf.c
+++ b/newlib/libc/stdio/vscanf.c
@@ -38,6 +38,7 @@ _DEFUN (vscanf, (fmt, ap),
     _CONST char *fmt _AND 
     va_list ap)
 {
+  _REENT_SMALL_CHECK_INIT(_stdin_r (_REENT));
   return __svfscanf_r (_REENT, _stdin_r (_REENT), fmt, ap);
 }
 
@@ -49,6 +50,7 @@ _DEFUN (_vscanf_r, (ptr, fmt, ap),
     _CONST char *fmt _AND 
     va_list ap)
 {
+  _REENT_SMALL_CHECK_INIT(_stdin_r (ptr));
   return __svfscanf_r (ptr, _stdin_r (ptr), fmt, ap);
 }