diff --git a/app/Services/Equipment/ServerService.php b/app/Services/Equipment/ServerService.php
index 9125073..71554ec 100644
--- a/app/Services/Equipment/ServerService.php
+++ b/app/Services/Equipment/ServerService.php
@@ -147,7 +147,7 @@ class ServerService extends EquipmentService
         }
 
         if ($oldEntity->getIP() !== $entity->getIP()) {
-            if (!$oldEntity->getIP()) { //null이거나 공백인경우
+            if ($oldEntity->getIP() !== null) { //null이거나 공백인경우
                 service('part_ipservice')->detachFromServer($oldEntity);
             }
             if ($entity->getIP() !== null) {
@@ -156,8 +156,7 @@ class ServerService extends EquipmentService
         }
 
         if ($oldEntity->getSwitchInfoUid() !== $entity->getSwitchInfoUid()) {
-            if (!$oldEntity->getSwitchInfoUid()) { //null이거나 공백인경우
-                dd($oldEntity);
+            if (is_int($oldEntity->getSwitchInfoUid())) { //null이거나 공백인경우
                 service('part_switchservice')->detachFromServer($oldEntity);
             }
             if ($entity->getSwitchInfoUid() !== null) {