diff --git a/src/io.f90 b/src/io.f90
index 088459a..cb33508 100644
--- a/src/io.f90
+++ b/src/io.f90
@@ -738,6 +738,7 @@ module io
 
 
         sub_box_num = sub_box_num + n
-
+    
+        call set_max_esize
     end subroutine read_mb
 end module io