diff --git a/src/core/CloudStreams.Core.Application/Extensions/CloudEventRecordExtensions.cs b/src/core/CloudStreams.Core.Application/Extensions/CloudEventRecordExtensions.cs
index 5226e77..cb51d2e 100644
--- a/src/core/CloudStreams.Core.Application/Extensions/CloudEventRecordExtensions.cs
+++ b/src/core/CloudStreams.Core.Application/Extensions/CloudEventRecordExtensions.cs
@@ -30,7 +30,7 @@ public static class CloudEventRecordExtensions
     public static CloudEvent ToCloudEvent(this CloudEventDescriptor descriptor)
     {
         ArgumentNullException.ThrowIfNull(descriptor);
-        var e = (JsonObject)JsonSerializer.Default.SerializeToNode(descriptor.Metadata.ContextAttributes.Where(a => a.Key.IsLowercased() && a.Key.IsAlphanumeric()))!;
+        var e = (JsonObject)JsonSerializer.Default.SerializeToNode(descriptor.Metadata.ContextAttributes.Where(a => a.Key.IsLowercased() && a.Key.IsAlphanumeric()).ToDictionary(kvp => kvp.Key, kvp => kvp.Value))!;
         var data = JsonSerializer.Default.SerializeToNode(descriptor.Data);
         e[CloudEventAttributes.Data] = data;
         return JsonSerializer.Default.Deserialize<CloudEvent>(e)!;