diff --git a/src/main/java/com/loafle/overflow/module/probe/model/Probe.java b/src/main/java/com/loafle/overflow/module/probe/model/Probe.java
index 914c7f3..ba2395f 100644
--- a/src/main/java/com/loafle/overflow/module/probe/model/Probe.java
+++ b/src/main/java/com/loafle/overflow/module/probe/model/Probe.java
@@ -81,8 +81,8 @@ public class Probe {
         this.nextPollingDate = nextPollingDate;
     }
 
-    @Basic
-    @Column(name = "DOMAIN_ID", nullable = false)
+    @ManyToOne
+    @JoinColumn(name = "DOMAIN_ID", nullable = false)
     public Domain getDomain() {
         return domain;
     }
@@ -91,8 +91,8 @@ public class Probe {
         this.domain = domain;
     }
 
-    @Basic
-    @Column(name = "PROBE_KEY", nullable = false, length = 50)
+
+    @Column(name = "PROBE_KEY", nullable = false)
     public String getProbeKey() {
         return probeKey;
     }