diff --git a/src/main/java/com/loafle/overflow/module/sensor/service/SensorService.java b/src/main/java/com/loafle/overflow/module/sensor/service/SensorService.java
index 126c584..92b8a53 100644
--- a/src/main/java/com/loafle/overflow/module/sensor/service/SensorService.java
+++ b/src/main/java/com/loafle/overflow/module/sensor/service/SensorService.java
@@ -46,8 +46,8 @@ public class SensorService  {
         return this.sensorDAO.findAllByTargetList(targetList);
     }
 
-    public List<Sensor> readAllByInfra(Infra infra) {
-        Infra dbInfra = this.infraService.read(infra.getId());
+    public List<Sensor> readAllByInfra(long infraId) {
+        Infra dbInfra = this.infraService.read(infraId);
 
         if(dbInfra == null || dbInfra.getTarget() == null) return null;