diff --git a/querydsl-hibernate-search/readme.txt b/querydsl-hibernate-search/readme.txt
index 59448122e..10d9359a6 100644
--- a/querydsl-hibernate-search/readme.txt
+++ b/querydsl-hibernate-search/readme.txt
@@ -1,8 +1,8 @@
 # LuceneSerializer :
  * serialize Querydsl expressions (Path & Operation) into Lucene queries
   * overview of operations : com.mysema.query.types.operation.Ops
-  * only supported path type : property 
- 
+  * only supported path type : property
+  * see EBoolean, ENumber, EComparable and Expr for operation usage
  
 # LuceneQuery :
  * ?!?