diff --git a/lib/safira/accounts/accounts.ex b/lib/safira/accounts/accounts.ex
index 1604e3ae..120d19f7 100644
--- a/lib/safira/accounts/accounts.ex
+++ b/lib/safira/accounts/accounts.ex
@@ -88,8 +88,8 @@ defmodule Safira.Accounts do
     |> Repo.preload(:prizes)
   end
 
-  def get_attendee_with_badge_count!(id) do
-    case get_attendee(id) do
+  def get_attendee_with_badge_count_by_id!(id) do
+    case get_attendee!(id) do
       nil ->
         nil
 
@@ -102,12 +102,25 @@ defmodule Safira.Accounts do
     end
   end
 
-  def get_attendee(id) do
-    Repo.get(Attendee, id)
+  def get_attendee_with_badge_count_by_username!(username) do
+    case get_attendee_by_username!(username) do
+      nil ->
+        nil
+
+      %Attendee{} = attendee ->
+        badges =
+          attendee.badges
+          |> Enum.filter(&(&1.type != 0))
+
+        Map.put(attendee, :badge_count, length(badges))
+    end
+  end
+
+  def get_attendee_by_username!(username) do
+    Repo.get_by!(Attendee, nickname: username)
     |> Repo.preload(:badges)
     |> Repo.preload(:user)
     |> Repo.preload(:prizes)
-    |> Repo.preload(:course)
   end
 
   def get_attendee_by_discord_association_code(discord_association_code) do
diff --git a/lib/safira/admin/accounts.ex b/lib/safira/admin/accounts.ex
index 2f89a5c8..9e2c2547 100644
--- a/lib/safira/admin/accounts.ex
+++ b/lib/safira/admin/accounts.ex
@@ -104,6 +104,12 @@ defmodule Safira.Admin.Accounts do
     |> Repo.preload(:badges)
   end
 
+  def get_attendee_by_username!(username) do
+    Repo.get_by!(Attendee, nickname: username)
+    |> Repo.preload(:user)
+    |> Repo.preload(:badges)
+  end
+
   @doc """
   Creates a attendee.
 
diff --git a/lib/safira_web/controllers/attendee_controller.ex b/lib/safira_web/controllers/attendee_controller.ex
index dc372b2a..5fb7f735 100644
--- a/lib/safira_web/controllers/attendee_controller.ex
+++ b/lib/safira_web/controllers/attendee_controller.ex
@@ -10,6 +10,7 @@ defmodule SafiraWeb.AttendeeController do
   alias Safira.Store
 
   action_fallback SafiraWeb.FallbackController
+  @uuid_regex ~r/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
 
   def index(conn, _params) do
     attendees = Accounts.list_active_attendees()
@@ -17,7 +18,14 @@ defmodule SafiraWeb.AttendeeController do
   end
 
   def show(conn, %{"id" => id}) do
-    attendee = Accounts.get_attendee_with_badge_count!(id)
+
+    attendee =
+      case String.match?(id, @uuid_regex) do
+        true ->
+          Accounts.get_attendee_with_badge_count_by_id!(id)
+        _ ->
+          Accounts.get_attendee_by_username!(id)
+      end
 
     cond do
       is_nil(attendee) ->