diff --git a/lib/runosaari/registration/performer.ex b/lib/runosaari/registration/performer.ex
index fc39459..9cb9601 100644
--- a/lib/runosaari/registration/performer.ex
+++ b/lib/runosaari/registration/performer.ex
@@ -8,7 +8,6 @@ defmodule Runosaari.Registration.Performer do
     field :fname, :string
     field :lname, :string
     field :notes, :string
-    field :performerId, :integer
     field :tel, :string
 
     timestamps()
@@ -17,9 +16,8 @@ defmodule Runosaari.Registration.Performer do
   @doc false
   def changeset(performer, attrs) do
     performer
-    |> cast(attrs, [:performerId, :fname, :lname, :email, :tel, :confirmed, :notes])
-    |> validate_required([:performerId, :fname, :lname, :email, :tel, :confirmed, :notes])
-    |> unique_constraint(:performerId)
+    |> cast(attrs, [:fname, :lname, :email, :tel, :confirmed, :notes])
+    |> validate_required([:fname, :lname, :email, :tel, :confirmed, :notes])
     |> unique_constraint(:email)
   end
 end
diff --git a/lib/runosaari_web/templates/performer/form.html.eex b/lib/runosaari_web/templates/performer/form.html.eex
index a2ef60b..b82342c 100644
--- a/lib/runosaari_web/templates/performer/form.html.eex
+++ b/lib/runosaari_web/templates/performer/form.html.eex
@@ -5,10 +5,6 @@
     </div>
   <% end %>
 
-  <%= label f, :performerId %>
-  <%= number_input f, :performerId %>
-  <%= error_tag f, :performerId %>
-
   <%= label f, :fname %>
   <%= text_input f, :fname %>
   <%= error_tag f, :fname %>
diff --git a/lib/runosaari_web/templates/performer/index.html.eex b/lib/runosaari_web/templates/performer/index.html.eex
index 48fe984..2a29a64 100644
--- a/lib/runosaari_web/templates/performer/index.html.eex
+++ b/lib/runosaari_web/templates/performer/index.html.eex
@@ -3,7 +3,6 @@
 <table>
   <thead>
     <tr>
-      <th>Performerid</th>
       <th>Fname</th>
       <th>Lname</th>
       <th>Email</th>
@@ -17,7 +16,6 @@
   <tbody>
 <%= for performer <- @performers do %>
     <tr>
-      <td><%= performer.performerId %></td>
       <td><%= performer.fname %></td>
       <td><%= performer.lname %></td>
       <td><%= performer.email %></td>
diff --git a/lib/runosaari_web/templates/performer/show.html.eex b/lib/runosaari_web/templates/performer/show.html.eex
index 67dd071..f8e601d 100644
--- a/lib/runosaari_web/templates/performer/show.html.eex
+++ b/lib/runosaari_web/templates/performer/show.html.eex
@@ -2,11 +2,6 @@
 
 <ul>
 
-  <li>
-    <strong>Performerid:</strong>
-    <%= @performer.performerId %>
-  </li>
-
   <li>
     <strong>Fname:</strong>
     <%= @performer.fname %>
diff --git a/priv/repo/migrations/20210327142456_create_performers.exs b/priv/repo/migrations/20210327142456_create_performers.exs
index 6331b15..feace8d 100644
--- a/priv/repo/migrations/20210327142456_create_performers.exs
+++ b/priv/repo/migrations/20210327142456_create_performers.exs
@@ -3,10 +3,9 @@ defmodule Runosaari.Repo.Migrations.CreatePerformers do
 
   def change do
     create table(:performers) do
-      add :performerId, :integer
+      add :email, :string
       add :fname, :string
       add :lname, :string
-      add :email, :string
       add :tel, :string
       add :confirmed, :boolean, default: false, null: false
       add :notes, :string
@@ -14,7 +13,6 @@ defmodule Runosaari.Repo.Migrations.CreatePerformers do
       timestamps()
     end
 
-    create unique_index(:performers, [:performerId])
     create unique_index(:performers, [:email])
   end
 end
diff --git a/test/runosaari/registration_test.exs b/test/runosaari/registration_test.exs
index 8b3b4b8..d778454 100644
--- a/test/runosaari/registration_test.exs
+++ b/test/runosaari/registration_test.exs
@@ -6,9 +6,23 @@ defmodule Runosaari.RegistrationTest do
   describe "performers" do
     alias Runosaari.Registration.Performer
 
-    @valid_attrs %{confirmed: true, email: "some email", fname: "some fname", lname: "some lname", notes: "some notes", performerId: 42, tel: "some tel"}
-    @update_attrs %{confirmed: false, email: "some updated email", fname: "some updated fname", lname: "some updated lname", notes: "some updated notes", performerId: 43, tel: "some updated tel"}
-    @invalid_attrs %{confirmed: nil, email: nil, fname: nil, lname: nil, notes: nil, performerId: nil, tel: nil}
+    @valid_attrs %{
+      confirmed: true,
+      email: "some email",
+      fname: "some fname",
+      lname: "some lname",
+      notes: "some notes",
+      tel: "some tel"
+    }
+    @update_attrs %{
+      confirmed: false,
+      email: "some updated email",
+      fname: "some updated fname",
+      lname: "some updated lname",
+      notes: "some updated notes",
+      tel: "some updated tel"
+    }
+    @invalid_attrs %{confirmed: nil, email: nil, fname: nil, lname: nil, notes: nil, tel: nil}
 
     def performer_fixture(attrs \\ %{}) do
       {:ok, performer} =
@@ -36,7 +50,6 @@ defmodule Runosaari.RegistrationTest do
       assert performer.fname == "some fname"
       assert performer.lname == "some lname"
       assert performer.notes == "some notes"
-      assert performer.performerId == 42
       assert performer.tel == "some tel"
     end
 
@@ -46,19 +59,24 @@ defmodule Runosaari.RegistrationTest do
 
     test "update_performer/2 with valid data updates the performer" do
       performer = performer_fixture()
-      assert {:ok, %Performer{} = performer} = Registration.update_performer(performer, @update_attrs)
+
+      assert {:ok, %Performer{} = performer} =
+               Registration.update_performer(performer, @update_attrs)
+
       assert performer.confirmed == false
       assert performer.email == "some updated email"
       assert performer.fname == "some updated fname"
       assert performer.lname == "some updated lname"
       assert performer.notes == "some updated notes"
-      assert performer.performerId == 43
       assert performer.tel == "some updated tel"
     end
 
     test "update_performer/2 with invalid data returns error changeset" do
       performer = performer_fixture()
-      assert {:error, %Ecto.Changeset{}} = Registration.update_performer(performer, @invalid_attrs)
+
+      assert {:error, %Ecto.Changeset{}} =
+               Registration.update_performer(performer, @invalid_attrs)
+
       assert performer == Registration.get_performer!(performer.id)
     end
 
diff --git a/test/runosaari_web/controllers/performer_controller_test.exs b/test/runosaari_web/controllers/performer_controller_test.exs
index ad40d5a..650e0b7 100644
--- a/test/runosaari_web/controllers/performer_controller_test.exs
+++ b/test/runosaari_web/controllers/performer_controller_test.exs
@@ -3,9 +3,23 @@ defmodule RunosaariWeb.PerformerControllerTest do
 
   alias Runosaari.Registration
 
-  @create_attrs %{confirmed: true, email: "some email", fname: "some fname", lname: "some lname", notes: "some notes", performerId: 42, tel: "some tel"}
-  @update_attrs %{confirmed: false, email: "some updated email", fname: "some updated fname", lname: "some updated lname", notes: "some updated notes", performerId: 43, tel: "some updated tel"}
-  @invalid_attrs %{confirmed: nil, email: nil, fname: nil, lname: nil, notes: nil, performerId: nil, tel: nil}
+  @create_attrs %{
+    confirmed: true,
+    email: "some email",
+    fname: "some fname",
+    lname: "some lname",
+    notes: "some notes",
+    tel: "some tel"
+  }
+  @update_attrs %{
+    confirmed: false,
+    email: "some updated email",
+    fname: "some updated fname",
+    lname: "some updated lname",
+    notes: "some updated notes",
+    tel: "some updated tel"
+  }
+  @invalid_attrs %{confirmed: nil, email: nil, fname: nil, lname: nil, notes: nil, tel: nil}
 
   def fixture(:performer) do
     {:ok, performer} = Registration.create_performer(@create_attrs)
@@ -75,6 +89,7 @@ defmodule RunosaariWeb.PerformerControllerTest do
     test "deletes chosen performer", %{conn: conn, performer: performer} do
       conn = delete(conn, Routes.performer_path(conn, :delete, performer))
       assert redirected_to(conn) == Routes.performer_path(conn, :index)
+
       assert_error_sent 404, fn ->
         get(conn, Routes.performer_path(conn, :show, performer))
       end