diff --git a/OpenSim/Framework/AgentCircuitData.cs b/OpenSim/Framework/AgentCircuitData.cs
index 51f0a1e4b8..f2fe49452a 100644
--- a/OpenSim/Framework/AgentCircuitData.cs
+++ b/OpenSim/Framework/AgentCircuitData.cs
@@ -128,27 +128,28 @@ namespace OpenSim.Framework
         /// <summary>
         /// Viewer's version string as reported by the viewer at login
         /// </summary>
-        private string ViewerInternal;
+        private string m_viewerInternal;
 
         /// <summary>
         /// Viewer's version string
         /// </summary>
         public string Viewer
         {
-            set { ViewerInternal = value; }
+            set { m_viewerInternal = value; }
+
             // Try to return consistent viewer string taking into account
             // that viewers have chaagned how version is reported
             // See http://opensimulator.org/mantis/view.php?id=6851
             get
             {
                 // Old style version string contains viewer name followed by a space followed by a version number
-                if (ViewerInternal == null || ViewerInternal.Contains(" "))
+                if (m_viewerInternal == null || m_viewerInternal.Contains(" "))
                 {
-                    return ViewerInternal;
+                    return m_viewerInternal;
                 }
                 else // New style version contains no spaces, just version number
                 {
-                    return Channel + " " + ViewerInternal;
+                    return Channel + " " + m_viewerInternal;
                 }
             }
         }