diff --git a/apps/ui/templates/dashboard.html b/apps/ui/templates/dashboard.html
index 6e0f4ad..66b848f 100644
--- a/apps/ui/templates/dashboard.html
+++ b/apps/ui/templates/dashboard.html
@@ -767,7 +767,7 @@
             const newTarget = Math.max(5.0, Math.min(30.0, currentTarget + delta));
             
             try {
-                const response = await fetch(`/api/devices/${deviceId}/set`, {
+                const response = await fetch(api(`/devices/${deviceId}/set`), {
                     method: 'POST',
                     headers: {
                         'Content-Type': 'application/json'