diff --git a/radar/index.php b/radar/index.php
index e64e260..442b7ae 100644
--- a/radar/index.php
+++ b/radar/index.php
@@ -16,7 +16,7 @@
           document.getElementById('afstand').innerText = data + " cm";
         });
     }
-    setInterval(updateAfstand, 1000); // elke seconde vernieuwen
+    setInterval(updateAfstand, 500); // elke seconde vernieuwen
     updateAfstand();
   </script>
 </body>