diff --git a/include/mruby/version.h b/include/mruby/version.h
index 01492e0ca..c2fc83d87 100644
--- a/include/mruby/version.h
+++ b/include/mruby/version.h
@@ -117,7 +117,7 @@ MRB_BEGIN_DECL
 #define MRUBY_BIRTH_YEAR 2010
 
 /*
- * MRuby's authors.
+ * mruby's authors.
  */
 #define MRUBY_AUTHOR "mruby developers"