diff --git a/src/main/java/com/loafle/overflow/module/sensor/service/SensorItemService.java b/src/main/java/com/loafle/overflow/module/sensor/service/SensorItemService.java
index 9211142..1334652 100644
--- a/src/main/java/com/loafle/overflow/module/sensor/service/SensorItemService.java
+++ b/src/main/java/com/loafle/overflow/module/sensor/service/SensorItemService.java
@@ -26,7 +26,7 @@ public class SensorItemService {
 
     @Transactional
     public SensorItem regist(SensorItem sensorItem) {
-        Sensor s = sensorItem.getSensor();
+        Sensor s = sensorDAO.findOne(sensorItem.getSensor().getId());
         s.setItemCount((short)(s.getItemCount() + 1));
         this.sensorDAO.save(s);
         return this.sensorItemDAO.save(sensorItem);
@@ -34,8 +34,8 @@ public class SensorItemService {
 
     @Transactional
     public boolean registAll(List<SensorItem> sensorItemList) {
-        Sensor s = sensorItemList.get(0).getSensor();
-        s.setItemCount((short)(s.getItemCount() + 1));
+        Sensor s = sensorDAO.findOne(sensorItemList.get(0).getSensor().getId());
+        s.setItemCount((short)sensorItemList.size());
         this.sensorDAO.save(s);
         this.sensorItemDAO.save(sensorItemList);
         return true;