diff --git a/backend/Api/Controllers/DeviceController.cs b/backend/Api/Controllers/DeviceController.cs
index 2c65ee5..d936fdb 100644
--- a/backend/Api/Controllers/DeviceController.cs
+++ b/backend/Api/Controllers/DeviceController.cs
@@ -28,21 +28,21 @@ namespace Api.Controllers
             return await _deviceLogic.GetDevices(userId);
         }
 
-        //[Authorize]
+        [Authorize]
         [HttpPost("adddevice/{userId}")]
         public async Task<IActionResult> AddDevice([FromBody] Device device, int userId)
         {
             return await _deviceLogic.AddDevice(device, userId);
         }
 
-        //[Authorize]
+        [Authorize]
         [HttpGet("logs/{deviceId}")]
         public async Task<IActionResult> GetLogs(int deviceId)
         {
             return await _deviceLogic.GetLogs(deviceId);
         }
 
-        //[Authorize]
+        [Authorize]
         [HttpPut("Edit/{deviceId}")]
         public async Task<IActionResult> EditDevice([FromBody] Device device, int deviceId)
         {
diff --git a/backend/Api/Controllers/UserController.cs b/backend/Api/Controllers/UserController.cs
index 6646186..186e1d4 100644
--- a/backend/Api/Controllers/UserController.cs
+++ b/backend/Api/Controllers/UserController.cs
@@ -33,14 +33,14 @@ namespace Api.Controllers
             return await _userLogic.RegisterUser(user);
         }
 
-        //[Authorize]
+        [Authorize]
         [HttpPut("Edit/{userId}")]
         public async Task<IActionResult> EditUser([FromBody] User user, int userId)
         {
             return await _userLogic.EditProfile(user, userId);
         }
 
-        //[Authorize]
+        [Authorize]
         [HttpDelete("Delete/{userId}")]
         public async Task<IActionResult> DeleteUser(int userId)
         {
diff --git a/backend/Api/MQTTReciever/MQTTReciever.cs b/backend/Api/MQTTReciever/MQTTReciever.cs
index 162f504..1bd56d9 100644
--- a/backend/Api/MQTTReciever/MQTTReciever.cs
+++ b/backend/Api/MQTTReciever/MQTTReciever.cs
@@ -43,7 +43,7 @@ namespace Api.MQTTReciever
 
                     var mqttMessageReceive = JsonSerializer.Deserialize<MQTTMessageReceive>(sensorData);
 
-                    if (mqttMessageReceive == null || mqttMessageReceive.temperature == 0 || mqttMessageReceive.device_id == null || mqttMessageReceive.timestamp == null)
+                    if (mqttMessageReceive == null || mqttMessageReceive.temperature == 0 || mqttMessageReceive.device_id == null || mqttMessageReceive.timestamp == 0)
                     {
                         return Task.CompletedTask;
                     }