diff --git a/include/mruby/compile.h b/include/mruby/compile.h
index 5c52a13a7..6b1b0ec23 100644
--- a/include/mruby/compile.h
+++ b/include/mruby/compile.h
@@ -99,9 +99,9 @@ enum mrb_string_type {
 struct mrb_parser_heredoc_info {
   mrb_bool allow_indent:1;
   mrb_bool remove_indent:1;
+  mrb_bool line_head:1;
   size_t indent;
   mrb_ast_node *indented;
-  mrb_bool line_head:1;
   enum mrb_string_type type;
   const char *term;
   int term_len;