diff --git a/helpers/ruby b/helpers/ruby
index e0e388e22..625ded52e 100644
--- a/helpers/ruby
+++ b/helpers/ruby
@@ -81,7 +81,7 @@ ynh_use_ruby () {
     ynh_ruby_load_path="PATH=$PATH"
 
     # Sets the local application-specific Ruby version
-    pushd $final_path
+    pushd ${install_dir:-$final_path}
         $rbenv_install_dir/bin/rbenv local $ruby_version
     popd
 }