diff --git a/LarpixServer/Account/Utils.cs b/LarpixServer/Account/Utils.cs
index 712a620..2411e59 100644
--- a/LarpixServer/Account/Utils.cs
+++ b/LarpixServer/Account/Utils.cs
@@ -256,7 +256,7 @@ public class Utils
                 string content = Encoding.UTF8.GetString(await Fs.ReadFile($"{path}/{invite}"));
                 if (!first) groupBuilder.Append(',');
                 first = false;
-                groupBuilder.Append($"\"{groupId}\": {{ \"timestamp\": {content}, \"receiver\": \"{userId}\" }}");
+                groupBuilder.Append($"\"{groupId};{userId}\": {{ \"timestamp\": {content}, \"receiver\": \"{userId}\", \"groupId\": \"{groupId}\" }}");
             }
         }
         groupBuilder.Append("}");
@@ -297,7 +297,7 @@ public class Utils
                 string content = Encoding.UTF8.GetString(await Fs.ReadFile($"{path}/{invite}"));
                 if (!first) groupBuilder.Append(',');
                 first = false;
-                groupBuilder.Append($"\"{groupId}\": {{ \"timestamp\": {content}, \"sender\": \"{userId}\" }}");
+                groupBuilder.Append($"\"{groupId};{userId}\": {{ \"timestamp\": {content}, \"sender\": \"{userId}\", \"groupId\": \"{groupId}\" }}");
             }
         }
         groupBuilder.Append("}");