diff --git a/io/iob_reset.c b/io/iob_reset.c
index b5caa07..7c4013d 100644
--- a/io/iob_reset.c
+++ b/io/iob_reset.c
@@ -1,7 +1,8 @@
 #include <stdlib.h>
+#include "byte.h"
 #include "iob_internal.h"
 
 void iob_reset(io_batch* b) {
   array_reset(&b->b);
-  free(b);
+  byte_zero(&b,sizeof(*b));
 }