diff --git a/websocket-sharp/Server/WebSocketServiceManager.cs b/websocket-sharp/Server/WebSocketServiceManager.cs
index 553bb19d..b80826dc 100644
--- a/websocket-sharp/Server/WebSocketServiceManager.cs
+++ b/websocket-sharp/Server/WebSocketServiceManager.cs
@@ -963,17 +963,21 @@ namespace WebSocketSharp.Server
       if (path.Length == 0)
         throw new ArgumentException ("An empty string.", "path");
 
-      if (path[0] != '/')
-        throw new ArgumentException ("Not an absolute path.", "path");
+      if (path[0] != '/') {
+        var msg = "It is not an absolute path.";
+
+        throw new ArgumentException (msg, "path");
+      }
 
       if (path.IndexOfAny (new[] { '?', '#' }) > -1) {
         var msg = "It includes either or both query and fragment components.";
+
         throw new ArgumentException (msg, "path");
       }
 
       path = path.TrimSlashFromEnd ();
-
       WebSocketServiceHost host;
+
       lock (_sync) {
         if (!_hosts.TryGetValue (path, out host))
           return false;