diff --git a/Implab/Parallels/MTQueue.cs b/Implab/Parallels/MTQueue.cs
--- a/Implab/Parallels/MTQueue.cs
+++ b/Implab/Parallels/MTQueue.cs
@@ -96,7 +96,7 @@ namespace Implab.Parallels {
                 m_current = null;
             }
 
-            public object IEnumerator.Current {
+            object IEnumerator.Current {
                 get {
                     if (m_current == null)
                         throw new InvalidOperationException();