diff --git a/include/mruby/compile.h b/include/mruby/compile.h
index 74cd8fb64..70206202e 100644
--- a/include/mruby/compile.h
+++ b/include/mruby/compile.h
@@ -53,10 +53,7 @@ MRB_API void mrb_ccontext_cleanup_local_variables(mrb_ccontext *c);
 #define mrbc_cleanup_local_variables mrb_ccontext_cleanup_local_variables
 
 /* AST node structure */
-typedef struct mrb_ast_node {
-  struct mrb_ast_node *car, *cdr;
-  uint16_t lineno, filename_index;
-} mrb_ast_node;
+typedef struct mrb_ast_node mrb_ast_node;
 
 /* lexer states */
 enum mrb_lex_state_enum {
diff --git a/mrbgems/mruby-compiler/core/node.h b/mrbgems/mruby-compiler/core/node.h
index f95f7eebd..220f85087 100644
--- a/mrbgems/mruby-compiler/core/node.h
+++ b/mrbgems/mruby-compiler/core/node.h
@@ -139,4 +139,10 @@ struct mrb_parser_heredoc_info {
   mrb_ast_node *doc;
 };
 
+/* AST node structure */
+struct mrb_ast_node {
+  struct mrb_ast_node *car, *cdr;
+  uint16_t lineno, filename_index;
+};
+
 #endif  /* MRUBY_COMPILER_NODE_H */