diff --git a/agent/consul/operator_raft_endpoint_test.go b/agent/consul/operator_raft_endpoint_test.go
index 9dfbc9fb6613..7242c40e6c45 100644
--- a/agent/consul/operator_raft_endpoint_test.go
+++ b/agent/consul/operator_raft_endpoint_test.go
@@ -121,6 +121,10 @@ func TestOperator_RaftGetConfiguration_ACLDeny(t *testing.T) {
 	if len(future.Configuration().Servers) != 1 {
 		t.Fatalf("bad: %v", future.Configuration().Servers)
 	}
+	serverIDLastIndexMap := make(map[raft.ServerID]uint64)
+	for _, serverState := range s1.autopilot.GetState().Servers {
+		serverIDLastIndexMap[serverState.Server.ID] = serverState.Stats.LastIndex
+	}
 	me := future.Configuration().Servers[0]
 	expected := structs.RaftConfigurationResponse{
 		Servers: []*structs.RaftServer{
@@ -131,6 +135,7 @@ func TestOperator_RaftGetConfiguration_ACLDeny(t *testing.T) {
 				Leader:          true,
 				Voter:           true,
 				ProtocolVersion: "3",
+				LastIndex:       serverIDLastIndexMap[me.ID],
 			},
 		},
 		Index: future.Index(),