diff --git a/websocket-sharp/Net/CookieCollection.cs b/websocket-sharp/Net/CookieCollection.cs
index 022c2b6e..5c7a42fa 100644
--- a/websocket-sharp/Net/CookieCollection.cs
+++ b/websocket-sharp/Net/CookieCollection.cs
@@ -797,8 +797,13 @@ namespace WebSocketSharp.Net
     /// Removes the specified cookie from the collection.
     /// </summary>
     /// <returns>
-    /// <c>true</c> if the cookie is successfully found and removed;
-    /// otherwise, <c>false</c>.
+    ///   <para>
+    ///   <c>true</c> if the cookie is successfully removed; otherwise,
+    ///   <c>false</c>.
+    ///   </para>
+    ///   <para>
+    ///   <c>false</c> if the cookie is not found in the collection.
+    ///   </para>
     /// </returns>
     /// <param name="cookie">
     /// A <see cref="Cookie"/> to remove.