diff --git a/System.Resources.NetStandard/ResXDataNode.cs b/System.Resources.NetStandard/ResXDataNode.cs
index efc7b75..1cb93d8 100644
--- a/System.Resources.NetStandard/ResXDataNode.cs
+++ b/System.Resources.NetStandard/ResXDataNode.cs
@@ -53,7 +53,7 @@ private ResXDataNode()
         {
         }
 
-        public ResXDataNode DeepClone()
+        internal ResXDataNode DeepClone()
         {
             return new ResXDataNode
             {