diff --git a/AsbCloudApp/Comparators/TelemetryUserDtoComparer.cs b/AsbCloudApp/Comparators/TelemetryUserDtoComparer.cs
index 42ed1e86..eac2d83d 100644
--- a/AsbCloudApp/Comparators/TelemetryUserDtoComparer.cs
+++ b/AsbCloudApp/Comparators/TelemetryUserDtoComparer.cs
@@ -7,7 +7,7 @@ namespace AsbCloudApp.Comparators
     public class TelemetryUserDtoComparer : IEqualityComparer<TelemetryUserDto>
     {
         /// <inheritdoc/>
-        public bool Equals(TelemetryUserDto prevUser, TelemetryUserDto nextUser)
+        public bool Equals(TelemetryUserDto? prevUser, TelemetryUserDto? nextUser)
         {
             if (prevUser is null || nextUser is null)
                 return false;