diff --git a/Source/Editor/Surface/Elements/SkeletonNodeNameSelectElement.cs b/Source/Editor/Surface/Elements/SkeletonNodeNameSelectElement.cs
index 0d8d676c7..d73590ac7 100644
--- a/Source/Editor/Surface/Elements/SkeletonNodeNameSelectElement.cs
+++ b/Source/Editor/Surface/Elements/SkeletonNodeNameSelectElement.cs
@@ -92,7 +92,7 @@ namespace FlaxEditor.Surface.Elements
             {
                 sb.Clear();
                 var node = nodes[nodeIndex];
-                _nodeNameToIndex.Add(node.Name, nodeIndex);
+                _nodeNameToIndex[node.Name] = nodeIndex;
                 int parent = node.ParentIndex;
                 while (parent != -1)
                 {