diff --git a/AsbCloudApp/Requests/MessageRequest.cs b/AsbCloudApp/Requests/MessageRequest.cs
index f11f6290..6e4410d8 100644
--- a/AsbCloudApp/Requests/MessageRequest.cs
+++ b/AsbCloudApp/Requests/MessageRequest.cs
@@ -68,6 +68,14 @@ public class MessageRequest : MessageRequestBase
     /// </summary>
     public IEnumerable<int> IdsWell { get; set; } = null!;
 
+    /// <summary>
+    /// <inheritdoc/>
+    /// </summary>
+    public MessageRequest()
+    {
+        
+    }
+
     /// <summary>
     /// параметры для запроса списка сообщений (с ids скважин)
     /// </summary>
diff --git a/AsbCloudInfrastructure/Services/MessageService.cs b/AsbCloudInfrastructure/Services/MessageService.cs
index e4a5b333..fe169259 100644
--- a/AsbCloudInfrastructure/Services/MessageService.cs
+++ b/AsbCloudInfrastructure/Services/MessageService.cs
@@ -43,7 +43,9 @@ public class MessageService : IMessageService
         var telemetryMessages = await messageRepository.GetMessagesAsync(messageTelemetryRequest, token);
 
         var groupedMessages = telemetryMessages.GroupBy(x => new { x.IdTelemetry, x.IdEvent });
-        var events = messageTelemetryRequest.Events.ToDictionary(e => e.Id);
+        var events = messageTelemetryRequest.Events
+            .GroupBy(e => e.Id)
+            .ToDictionary(e => e.Key, e => e.FirstOrDefault());
 
         var idsWellsDict = messageTelemetryRequest.Telemetries.ToDictionary(e => e.Id, e => e.IdWell);