diff --git a/datamodel/low/v3/server_test.go b/datamodel/low/v3/server_test.go
index f306a7cd..b488b1e5 100644
--- a/datamodel/low/v3/server_test.go
+++ b/datamodel/low/v3/server_test.go
@@ -55,7 +55,7 @@ variables:
 	for v := range n.Variables.Value.ValuesFromOldest() {
 		assert.NotNil(t, v.Value.GetKeyNode())
 		assert.NotNil(t, v.Value.GetRootNode())
-		assert.Nil(t, v.Value.GetExtensions())
+		assert.Equal(t, 0, v.Value.GetExtensions().Len())
 	}
 }