diff --git a/app.psgi b/app.psgi
index 0824a3ebc6..b91000eaf9 100644
--- a/app.psgi
+++ b/app.psgi
@@ -54,6 +54,7 @@ builder {
     };
 
     enable 'ReverseProxy';
+    enable '+Koha::Middleware::UserEnv';
     enable '+Koha::Middleware::SetEnv';
     enable '+Koha::Middleware::RealIP';