diff --git a/include/picrin.h b/include/picrin.h
index cbe33262..f18f75c6 100644
--- a/include/picrin.h
+++ b/include/picrin.h
@@ -142,7 +142,7 @@ void pic_gc_arena_restore(pic_state *, int);
 pic_state *pic_open(int argc, char *argv[], char **envp);
 void pic_close(pic_state *);
 
-void pic_define(pic_state *, const char *, pic_value); /* symbol is automatically exported */
+void pic_define(pic_state *, const char *, pic_value); /* automatic export */
 pic_value pic_ref(pic_state *, const char *);
 void pic_set(pic_state *, const char *, pic_value);