diff --git a/mathesar_ui/src/api/rpc/roles.ts b/mathesar_ui/src/api/rpc/roles.ts
index d481a70485..3252d78dbe 100644
--- a/mathesar_ui/src/api/rpc/roles.ts
+++ b/mathesar_ui/src/api/rpc/roles.ts
@@ -47,7 +47,7 @@ export const roles = {
   set_members: rpcMethodTypeContainer<
     {
       database_id: RawDatabase['id'];
-      role_oid: RawRole['oid'];
+      parent_role_oid: RawRole['oid'];
       members: RawRole['oid'][];
     },
     RawRole
diff --git a/mathesar_ui/src/models/Role.ts b/mathesar_ui/src/models/Role.ts
index 80397c58a3..3ec5dad652 100644
--- a/mathesar_ui/src/models/Role.ts
+++ b/mathesar_ui/src/models/Role.ts
@@ -85,7 +85,7 @@ export class Role {
     const promise = api.roles
       .set_members({
         database_id: this.database.id,
-        role_oid: this.oid,
+        parent_role_oid: this.oid,
         members: [...memberOids],
       })
       .run();