diff --git a/DAO.md b/DAO.md
index d2c6a89..aa2cc68 100644
--- a/DAO.md
+++ b/DAO.md
@@ -77,7 +77,7 @@ movie.delete()
 ```
 
 ## Referencing
-### Simple-reference
+### Simple reference
 Let's say you have this table:
 ```kotlin
 object Users: IntIdTable() {
@@ -124,7 +124,7 @@ You can call:
 ```kotlin
 movie.ratings // returns all UserRating objects with this movie as film
 ```
-### Optional-reference
+### Optional reference
 You can also add an optional reference:
 ```kotlin
 object UserRatings: IntIdTable() {