diff --git a/apps/transport/lib/transport/gtfs_diff.ex b/apps/transport/lib/transport/gtfs_diff.ex
index 98c28e0d15..55355eb46a 100644
--- a/apps/transport/lib/transport/gtfs_diff.ex
+++ b/apps/transport/lib/transport/gtfs_diff.ex
@@ -109,7 +109,7 @@ defmodule Transport.GTFSDiff do
 
   def primary_key(file_name) do
     keys = %{
-      "agency.txt" => ["agency_id", "agency_name"],
+      "agency.txt" => ["agency_id"],
       "stops.txt" => ["stop_id"],
       "routes.txt" => ["route_id"],
       "trips.txt" => ["trip_id"],
diff --git a/apps/transport/test/transport/gtfs_diff_test.exs b/apps/transport/test/transport/gtfs_diff_test.exs
index 09661aeabb..caa3126c48 100644
--- a/apps/transport/test/transport/gtfs_diff_test.exs
+++ b/apps/transport/test/transport/gtfs_diff_test.exs
@@ -76,7 +76,7 @@ defmodule Transport.GTFSDiffTest do
                  action: "update",
                  file: "agency.txt",
                  id: 2,
-                 identifier: %{"agency_id" => "agency", "agency_name" => "BIBUS"},
+                 identifier: %{"agency_id" => "agency"},
                  initial_value: %{"agency_nickname" => ""},
                  new_value: %{"agency_nickname" => "little_agency"},
                  target: "row"