diff --git a/wled00/data/index.js b/wled00/data/index.js
index 22b14a73..793ac1d4 100644
--- a/wled00/data/index.js
+++ b/wled00/data/index.js
@@ -1361,7 +1361,7 @@ function updateTrail(e)
 {
 	if (e==null) return;
 	let sd = e.parentNode.getElementsByClassName('sliderdisplay')[0];
-	if (sd && getComputedStyle(sd).getPropertyValue("--bg") !== "none") {
+	if (sd && getComputedStyle(sd).getPropertyValue("--bg").trim() !== "none") { // trim() for Safari
 		var max = e.hasAttribute('max') ? e.attributes.max.value : 255;
 		var perc = Math.round(e.value * 100 / max);
 		if (perc < 50) perc += 2;