diff --git a/doc/index.md b/doc/index.md
index 12d10b1..5213261 100644
--- a/doc/index.md
+++ b/doc/index.md
@@ -1,10 +1,10 @@
 Developer's Guide
 ----
- * [[How to run from source tree|HowToRun]]
- * [[Directory Structure|DirectoryStructure]]
- * [[Mapping and Validation|Validations]]
- * [[Authentication in Controller|Authentication]]
- * [[About Action in Issue Comment|CommentAction]]
- * [[Activity Types|Activity]]
- * [[Notification Email|Notification]]
- * [[Automatic Schema Updating|AutoUpdate]]
+ * [How to run from source tree](how_to_run.md)
+ * [Directory Structure](directory.md)
+ * [Mapping and Validation](mapping_and_validation.md)
+ * [Authentication in Controller](authentication.md)
+ * [About Action in Issue Comment](comment_actionb.md)
+ * [Activity Types](activity.md)
+ * [Notification Email](notification.md)
+ * [Automatic Schema Updating](auto_update.md)