diff --git a/js/tick.mjs b/js/tick.mjs
index 4356b35..fcc1568 100644
--- a/js/tick.mjs
+++ b/js/tick.mjs
@@ -10,6 +10,6 @@ export function tick () {
 	last_tick += deltatime;
 	
 	for (const callback of tickers) {
-		callback(deltatime);
+		callback(deltatime / 1000);
 	}
 }