diff --git a/Pleroma/Models/Attachment.cs b/Pleroma/Models/Attachment.cs
index b95b15e..c1b0dbf 100644
--- a/Pleroma/Models/Attachment.cs
+++ b/Pleroma/Models/Attachment.cs
@@ -79,7 +79,7 @@ public class PleromaAttachmentData
     /// MIME type of the attachment
     /// </summary>
     [JsonPropertyName("mime_type")]
-    public string Content { get; set; } = null!;
+    public string MIMEType { get; set; } = null!;
 
     /// <summary>
     /// Name of the attachment, typically the filename