diff --git a/websocket-sharp/Net/CookieException.cs b/websocket-sharp/Net/CookieException.cs
index 06123aec..390e60c0 100644
--- a/websocket-sharp/Net/CookieException.cs
+++ b/websocket-sharp/Net/CookieException.cs
@@ -106,10 +106,15 @@ namespace WebSocketSharp.Net
     /// <param name="streamingContext">
     /// A <see cref="StreamingContext"/> that specifies the destination for the serialization.
     /// </param>
-    [SecurityPermission (
-      SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.SerializationFormatter)]
+    [
+      SecurityPermission (
+        SecurityAction.LinkDemand,
+        Flags = SecurityPermissionFlag.SerializationFormatter
+      )
+    ]
     public override void GetObjectData (
-      SerializationInfo serializationInfo, StreamingContext streamingContext)
+      SerializationInfo serializationInfo, StreamingContext streamingContext
+    )
     {
       base.GetObjectData (serializationInfo, streamingContext);
     }