diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 0476792..a4c8139 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -15,7 +15,7 @@ class ApplicationController < ActionController::Base
   end
 
   def current_client
-    @current_client ||= Client.find_by key: request.headers["X-API-KEY"]
+    @current_client ||= Client.find_by key: (request.headers["X_API_KEY"] || request.headers["HTTP_X_API_KEY"])
   end
 
   def current_ability