diff --git a/lib/tasks/dev.rake b/lib/tasks/dev.rake
index a73f3eb24..9440b70fb 100644
--- a/lib/tasks/dev.rake
+++ b/lib/tasks/dev.rake
@@ -33,7 +33,8 @@ particulier_userinfo_endpoint: 'https://fcp.integ01.dev-franceconnect.fr/api/v1/
 particulier_logout_endpoint: 'https://fcp.integ01.dev-franceconnect.fr/api/v1/logout'
 EOF
     file.write(comment)
-    file.write("TPS::Application.config.FRANCE_CONNECT = #{comment}")
     file.close
+    
+    file.write("TPS::Application.config.FRANCE_CONNECT = #{Hashie::Mash.new('config/france_connect.yml')}")
   end
 end