diff --git a/app/models/entities/Study.scala b/app/models/entities/Study.scala
index a2c76c1b..6173dba8 100644
--- a/app/models/entities/Study.scala
+++ b/app/models/entities/Study.scala
@@ -253,14 +253,14 @@ object Study extends Logging {
       }
     )
   lazy val studyImp: ObjectType[Backend, JsValue] = ObjectType(
-    "Gwas",
+    "Study",
     "A genome-wide association study",
     fields[Backend, JsValue](
       gwasFields ++ Seq(credibleSetField)*
     )
   )
   val studyWithoutCredSetsImp: ObjectType[Backend, JsValue] = ObjectType(
-    "GwasWithoutCredSets",
+    "StudyWithoutCredSets",
     "A genome-wide association study without credible sets",
     fields[Backend, JsValue](
       gwasFields*
diff --git a/app/models/gql/Objects.scala b/app/models/gql/Objects.scala
index 490d198b..84faafac 100644
--- a/app/models/gql/Objects.scala
+++ b/app/models/gql/Objects.scala
@@ -1192,7 +1192,9 @@ object Objects extends Logging {
     )
 
   lazy val mUnionType: UnionType[Backend] =
-    UnionType("EntityUnionType", types = List(targetImp, drugImp, diseaseImp, variantIndexImp))
+    UnionType("EntityUnionType",
+              types = List(targetImp, drugImp, diseaseImp, variantIndexImp, studyImp)
+    )
 
   implicit val searchResultAggsCategoryImp: ObjectType[Backend, SearchResultAggCategory] =
     deriveObjectType[Backend, models.entities.SearchResultAggCategory]()