diff --git a/app/controllers/api/v1/users_controller.rb b/app/controllers/api/v1/users_controller.rb
index 2f658a1..b1afff2 100644
--- a/app/controllers/api/v1/users_controller.rb
+++ b/app/controllers/api/v1/users_controller.rb
@@ -167,11 +167,11 @@ module Api
 
       # Specify whitelisted properties that can be modified.
       def set
-        @user = User.where('username = ?', params[:id].downcase).first
+        @user = User.find_by('lower(username) = ?', params[:id].downcase)
       end
 
       def set_by_id
-        @user = User.where('id = ?', params[:id]).first
+        @user = User.find_by('id = ?', params[:id])
       end
 
       def user_params