diff --git a/test/alerts/alerts_test.exs b/test/alerts/alerts_test.exs
index 2dd647cfaf..cf4ad6e423 100644
--- a/test/alerts/alerts_test.exs
+++ b/test/alerts/alerts_test.exs
@@ -113,7 +113,7 @@ defmodule AlertsTest do
   describe "diversion?/1" do
     test "returns true when created at is before active period" do
       created_at = Timex.now()
-      active_period = [Timex.shift(created_at, days: 1), Timex.shift(created_at, days: 2)]
+      active_period = [{Timex.shift(created_at, days: 1), Timex.shift(created_at, days: 2)}]
 
       alert =
         Factories.Alerts.Alert.build(:alert,
@@ -127,7 +127,7 @@ defmodule AlertsTest do
 
     test "returns false when created at is after active period" do
       created_at = Timex.now()
-      active_period = [Timex.shift(created_at, days: -2), Timex.shift(created_at, days: -1)]
+      active_period = [{Timex.shift(created_at, days: -2), Timex.shift(created_at, days: -1)}]
 
       alert =
         Factories.Alerts.Alert.build(:alert,
diff --git a/test/support/factories/alerts/alert.ex b/test/support/factories/alerts/alert.ex
index 5718199818..10e18fd532 100644
--- a/test/support/factories/alerts/alert.ex
+++ b/test/support/factories/alerts/alert.ex
@@ -11,7 +11,7 @@ defmodule Test.Support.Factories.Alerts.Alert do
   def alert_factory do
     %Alert{
       id: :rand.uniform(999) |> Integer.to_string(),
-      active_period: [Faker.DateTime.forward(1), Faker.DateTime.forward(2)],
+      active_period: [{Faker.DateTime.forward(1), Faker.DateTime.forward(2)}],
       banner: Faker.Lorem.Shakespeare.king_richard_iii(),
       cause: Faker.Lorem.Shakespeare.king_richard_iii(),
       created_at: Timex.now(),