diff --git a/server/php/server.php b/server/php/server.php
index 941361d..2f0f2c6 100644
--- a/server/php/server.php
+++ b/server/php/server.php
@@ -128,7 +128,7 @@ function handleStream() {
             $lastCount = $currentCount;
         }
 
-        // Send keepalive comment every 15 seconds
+        // Send keepalive comment every 1 second (keeps SSE connection alive)
         echo ": keepalive\n\n";
         flush();