diff --git a/querydsl-jdoql/pom.xml b/querydsl-jdoql/pom.xml
index 24c71fa67..a52e3e7b4 100644
--- a/querydsl-jdoql/pom.xml
+++ b/querydsl-jdoql/pom.xml
@@ -83,6 +83,7 @@
         <artifactId>maven-apt-plugin</artifactId>
         <version>1.0.15</version>
         <executions>
+          <!-- creates Querydsl query types for Product and Book -->
           <execution>
             <phase>generate-sources</phase>
             <goals>