diff --git a/neo4j/example/src/main/java/example/springdata/neo4j/Roles.java b/neo4j/example/src/main/java/example/springdata/neo4j/Roles.java
index d4495af7..6a33c75f 100644
--- a/neo4j/example/src/main/java/example/springdata/neo4j/Roles.java
+++ b/neo4j/example/src/main/java/example/springdata/neo4j/Roles.java
@@ -20,6 +20,8 @@ import java.util.Collections;
 import java.util.List;
 
 import org.springframework.data.annotation.PersistenceConstructor;
+import org.springframework.data.neo4j.core.schema.GeneratedValue;
+import org.springframework.data.neo4j.core.schema.Id;
 import org.springframework.data.neo4j.core.schema.RelationshipProperties;
 import org.springframework.data.neo4j.core.schema.TargetNode;
 
@@ -32,6 +34,10 @@ import org.springframework.data.neo4j.core.schema.TargetNode;
 @RelationshipProperties
 public class Roles {
 
+	@Id
+	@GeneratedValue
+	private Long id;
+
 	private final List<String> roles;
 
 	@TargetNode