diff --git a/ooniapi/services/reverseproxy/templates/backend-proxy.conf.template b/ooniapi/services/reverseproxy/templates/backend-proxy.conf.template
index 9bf16fbc..6942ba40 100644
--- a/ooniapi/services/reverseproxy/templates/backend-proxy.conf.template
+++ b/ooniapi/services/reverseproxy/templates/backend-proxy.conf.template
@@ -26,7 +26,7 @@ server {
         proxy_set_header Connection 'upgrade';
         proxy_set_header Host $host;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Real-IP $http_x_forwarded_for;
+        proxy_set_header X-Real-Ip $http_x_forwarded_for;
         proxy_cache_bypass $http_upgrade;
     }
 }