diff --git a/datamodel/low/base/example.go b/datamodel/low/base/example.go
index a84ccb9b..2ddf5418 100644
--- a/datamodel/low/base/example.go
+++ b/datamodel/low/base/example.go
@@ -89,15 +89,7 @@ func (ex *Example) Build(ctx context.Context, keyNode, root *yaml.Node, _ *index
 		expChildNodes := low.ExtractNodesRecursive(ctx, vn)
 		expChildNodes.Range(func(k, v interface{}) bool {
 			if arr, ko := v.([]*yaml.Node); ko {
-				if ext, ok := ex.Nodes.Load(k); ok {
-					if extArr, kk := ext.([]*yaml.Node); kk {
-						ex.Nodes.Store(k, append(extArr, arr...))
-					} else {
-						ex.Nodes.Store(k, arr)
-					}
-				} else {
-					ex.Nodes.Store(k, arr)
-				}
+				ex.Nodes.Store(k, arr)
 			}
 			return true
 		})
diff --git a/datamodel/low/base/schema.go b/datamodel/low/base/schema.go
index 3abddba2..e1fdba54 100644
--- a/datamodel/low/base/schema.go
+++ b/datamodel/low/base/schema.go
@@ -727,9 +727,6 @@ func (s *Schema) Build(ctx context.Context, root *yaml.Node, idx *index.SpecInde
 					discriminator.AddNode(key.(int), g)
 				}
 			}
-			if n, ok := val.(*yaml.Node); ok {
-				discriminator.AddNode(key.(int), n)
-			}
 			return true
 		})
 	}
diff --git a/datamodel/low/v3/server_test.go b/datamodel/low/v3/server_test.go
index fc133944..abfe2668 100644
--- a/datamodel/low/v3/server_test.go
+++ b/datamodel/low/v3/server_test.go
@@ -50,6 +50,12 @@ variables:
 		low.GenerateHashString(s.Value))
 
 	assert.Equal(t, 1, orderedmap.Len(n.GetExtensions()))
+
+	// check nodes on variables
+	for k := n.Variables.Value.First(); k != nil; k = k.Next() {
+		assert.NotNil(t, k.Value().Value.GetKeyNode())
+		assert.NotNil(t, k.Value().Value.GetRootNode())
+	}
 }
 
 func TestServer_Build_NoVars(t *testing.T) {