diff --git a/newlib/configure.host b/newlib/configure.host
index 2c1d8fbc3..32f5056e6 100644
--- a/newlib/configure.host
+++ b/newlib/configure.host
@@ -548,6 +548,7 @@ case "${host}" in
 	newlib_fseek_optimization=no
 	newlib_wide_orient=no
 	newlib_multithread=no
+	newlib_io_c99_formats=yes
 	;;
   sh*-*)
 	sys_dir=sh