diff --git a/src/main/java/com/loafle/bridge/discoveryhistory/DiscoveryHistory.java b/src/main/java/com/loafle/bridge/discoveryhistory/DiscoveryHistory.java
index ab01b1b..1aeb8c7 100644
--- a/src/main/java/com/loafle/bridge/discoveryhistory/DiscoveryHistory.java
+++ b/src/main/java/com/loafle/bridge/discoveryhistory/DiscoveryHistory.java
@@ -1,5 +1,7 @@
 package com.loafle.bridge.discoveryhistory;
 
+import com.loafle.bridge.discoveryzone.DiscoveryZone;
+
 import javax.persistence.*;
 import java.util.Date;
 
@@ -14,16 +16,24 @@ public class DiscoveryHistory
     @GeneratedValue(strategy = GenerationType.AUTO)
     private long id;
 
-    @Column(columnDefinition = "TIMESTAMP DEFAULT CURRENT_TIMESTAMP", nullable = false, updatable = false)
+    @Column(nullable = false, updatable = false)
     private Date startDate;
-    @Column(columnDefinition = "TIMESTAMP DEFAULT CURRENT_TIMESTAMP", updatable = false)
+    @Column(updatable = false)
     private Date endDate;
 
     @Column(nullable=false)
     private Boolean result;
 
-//    private null DiscoveryZone;
+    @Column(nullable=false)
+    private DiscoveryZone zone;
 
+    public DiscoveryZone getZone() {
+        return zone;
+    }
+
+    public void setZone(DiscoveryZone zone) {
+        this.zone = zone;
+    }
 
     public long getId() {
         return id;