diff --git a/config/initializers/cors.rb b/config/initializers/cors.rb
index 671c7a046..148a777b8 100644
--- a/config/initializers/cors.rb
+++ b/config/initializers/cors.rb
@@ -17,7 +17,7 @@
   end
 
   allow do
-    origins 'localhost:3000', /\Ahttps:\/\/*.datacite.org\z/
+    origins 'localhost:3000', /\.datacite\.org\z/
 
     resource '*',
       headers: :any,