diff --git a/src/com/eldrix/hermes/graph.clj b/src/com/eldrix/hermes/graph.clj
index 15947dfd..0c3e1ced 100644
--- a/src/com/eldrix/hermes/graph.clj
+++ b/src/com/eldrix/hermes/graph.clj
@@ -78,7 +78,7 @@
    :info.snomed.RefsetItem/correlationId
    :info.snomed.RefsetItem/mapCategoryId
    :info.snomed.RefsetItem/valueId
-   :info.snomed.RefsetItem/owlExeression])
+   :info.snomed.RefsetItem/owlExpression])
 
 (pco/defresolver concept-by-id
   "Returns a concept by identifier; results namespaced to `:info.snomed.Concept/`"