diff --git a/lib/refrepo/utils.rb b/lib/refrepo/utils.rb
index 35ad5d5303459b6fabf3b99b2ea55e08acabc98d..aca21c31cca7aab497766788f111edbebdfc190c 100644
--- a/lib/refrepo/utils.rb
+++ b/lib/refrepo/utils.rb
@@ -15,7 +15,7 @@ module RefRepo::Utils
       o = {}
       puts "Check the documentation https://www.grid5000.fr/w/TechTeam:Reference_Repository#Credentials and your ~/.grid5000_api.yml file"
     end
-    d = URI.open("#{conf['uri']}/#{conf['version']}/#{path}", o).read
+    d = open("#{conf['uri']}/#{conf['version']}/#{path}", o).read
     return JSON::parse(d)
   end