diff --git a/pandasaurus_cxg/graph_generator/graph_generator.py b/pandasaurus_cxg/graph_generator/graph_generator.py
index 8fba3fb..6c65edc 100644
--- a/pandasaurus_cxg/graph_generator/graph_generator.py
+++ b/pandasaurus_cxg/graph_generator/graph_generator.py
@@ -264,9 +264,7 @@ def add_metadata_nodes(self, metadata_fields: List[str]):
                         bnode_axiom = BNode()
                         self.graph.add((bnode_axiom, RDF.type, OWL.Axiom))
                         self.graph.add((bnode_axiom, OWL.annotatedSource, s))
-                        self.graph.add(
-                            (bnode_axiom, OWL.annotatedProperty, self.ns["has_" + metadata])
-                        )
+                        self.graph.add((bnode_axiom, OWL.annotatedProperty, self.ns[metadata]))
                         self.graph.add((bnode_axiom, OWL.annotatedTarget, annotated_target))
                         self.graph.add(
                             (