diff --git a/htdocs/css/openwebrx.css b/htdocs/css/openwebrx.css
index 64e4a31..584762c 100644
--- a/htdocs/css/openwebrx.css
+++ b/htdocs/css/openwebrx.css
@@ -573,7 +573,7 @@ img.openwebrx-mirror-img
 .openwebrx-progressbar-text
 {
 	position: absolute;
-	left:50;
+	left:50%;
 	top:50%;
 	transform: translate(-50%, -50%);
 	white-space: nowrap;