diff --git a/portainer/rootfs/etc/nginx/templates/ingress.gtpl b/portainer/rootfs/etc/nginx/templates/ingress.gtpl
index 0946ffa2f..b523aa075 100644
--- a/portainer/rootfs/etc/nginx/templates/ingress.gtpl
+++ b/portainer/rootfs/etc/nginx/templates/ingress.gtpl
@@ -12,7 +12,7 @@ server {
     proxy_connect_timeout 30m;
     proxy_send_timeout 30m;
     proxy_read_timeout 30m;
-    proxy_set_header Origin "$http_origin";
+    proxy_set_header Origin $http_origin;
     # Ensure the backend knows the correct host
     proxy_set_header Host $http_host;
     proxy_set_header X-Forwarded-Host $http_host;