diff --git a/src/main/java/org/wikitolearn/wikirating/model/Page.java b/src/main/java/org/wikitolearn/wikirating/model/Page.java
index 8d99d34..c312d21 100644
--- a/src/main/java/org/wikitolearn/wikirating/model/Page.java
+++ b/src/main/java/org/wikitolearn/wikirating/model/Page.java
@@ -1,219 +1,221 @@
 /**
  * 
  */
 package org.wikitolearn.wikirating.model;
 
+import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.Set;
 
 import org.neo4j.ogm.annotation.GraphId;
 import org.neo4j.ogm.annotation.Index;
 import org.neo4j.ogm.annotation.Labels;
 import org.neo4j.ogm.annotation.NodeEntity;
 import org.neo4j.ogm.annotation.Relationship;
 
 /**
  * @author aletundo
  *
  */
 @NodeEntity( label = "Page")
 public class Page {
 
 	@GraphId
 	private Long graphId;
 	private int pageid;
 	@Index
 	private String title;
 	@Index
 	private String lang;
 	@Index(unique = true, primary = true)
 	private String langPageId;
 	private double pageRank;
 	@Relationship(type = "LAST_REVISION", direction = Relationship.OUTGOING)
 	private Revision lastRevision;
 	@Relationship(type = "FIRST_REVISION", direction = Relationship.OUTGOING)
 	private Revision fistRevision;
 	@Relationship(type = "LEVEL_TWO", direction = Relationship.UNDIRECTED)
 	private Set<Page> levelsTwo;
 	@Relationship(type = "LEVEL_THREE", direction = Relationship.UNDIRECTED)
 	private Set<Page> levelsThree;
 	@Labels
-	private Set<String> labels;
+	private Set<String> labels = new HashSet<>();
 	
 	/**
 	 * 
 	 */
 	public Page() {}
 
 	/**
 	 * @param pageid
 	 * @param title
 	 * @param lang
 	 */
 	public Page(int pageid, String title, String lang, String langPageId) {
 		this.pageid = pageid;
 		this.title = title;
 		this.lang = lang;	
 		this.langPageId = langPageId;
 	}
 
 	/**
 	 * @return the graphId
 	 */
 	public Long getGraphId() {
 		return graphId;
 	}
 
 	/**
 	 * @param graphId the graphId to set
 	 */
 	public void setGraphId(Long graphId) {
 		this.graphId = graphId;
 	}
 
 	/**
 	 * @return the pageid
 	 */
 	public int getPageid() {
 		return pageid;
 	}
 
 	/**
 	 * @param pageid the pageid to set
 	 */
 	public void setPageid(int pageid) {
 		this.pageid = pageid;
 	}
 
 	/**
 	 * @return the title
 	 */
 	public String getTitle() {
 		return title;
 	}
 
 	/**
 	 * @param title the title to set
 	 */
 	public void setTitle(String title) {
 		this.title = title;
 	}
 
 	/**
 	 * @return the lang
 	 */
 	public String getLang() {
 		return lang;
 	}
 
 	/**
 	 * @param lang the lang to set
 	 */
 	public void setLang(String lang) {
 		this.lang = lang;
 	}
 
 	/**
 	 * @return the langPageId
 	 */
 	public String getLangPageId() {
 		return langPageId;
 	}
 
 	/**
 	 * @param langPageId the langPageId to set
 	 */
 	public void setLangPageId(String langPageId) {
 		this.langPageId = langPageId;
 	}
 
 	/**
 	 * @return the pageRank
 	 */
 	public double getPageRank() {
 		return pageRank;
 	}
 
 	/**
 	 * @param pageRank the pageRank to set
 	 */
 	public void setPageRank(double pageRank) {
 		this.pageRank = pageRank;
 	}
 
 	/**
 	 * @return the lastRevision
 	 */
 	public Revision getLastRevision() {
 		return lastRevision;
 	}
 
 	/**
 	 * @param lastRevision the lastRevision to set
 	 */
 	public void setLastRevision(Revision lastRevision) {
 		this.lastRevision = lastRevision;
 	}
 
 	/**
 	 * @return the fistRevision
 	 */
 	public Revision getFistRevision() {
 		return fistRevision;
 	}
 
 	/**
 	 * @param fistRevision the fistRevision to set
 	 */
 	public void setFistRevision(Revision fistRevision) {
 		this.fistRevision = fistRevision;
 	}
 
 	/**
 	 * @return the levelsTwo
 	 */
 	public Set<Page> getLevelsTwo() {
 		return levelsTwo;
 	}
 
 	/**
 	 * @param levelsTwo the levelsTwo to set
 	 */
 	public void setLevelsTwo(Set<Page> levelsTwo) {
 		this.levelsTwo = levelsTwo;
 	}
 
 	/**
 	 * @return the levelsThree
 	 */
 	public Set<Page> getLevelsThree() {
 		return levelsThree;
 	}
 
 	/**
 	 * @param levelsThree the levelsThree to set
 	 */
 	public void setLevelsThree(Set<Page> levelsThree) {
 		this.levelsThree = levelsThree;
 	}
 
 	/**
 	 * @return the labels
 	 */
 	public Set<String> getLabels() {
 		return labels;
 	}
 
 	/**
 	 * @param labels the labels to set
 	 */
 	public void setLabels(Set<String> labels) {
 		this.labels = labels;
 	}
 	
 	/**
 	 * @param label the label to set
 	 */
 	public void addLabel(String label) {
 		this.labels.add(label);
 	}
 }
\ No newline at end of file