diff --git a/src/controlCenter/widgets/backlight/backlightUtil.vala b/src/controlCenter/widgets/backlight/backlightUtil.vala
index 6ac2c4c..5eb2392 100644
--- a/src/controlCenter/widgets/backlight/backlightUtil.vala
+++ b/src/controlCenter/widgets/backlight/backlightUtil.vala
@@ -116,11 +116,11 @@ namespace SwayNotificationCenter.Widgets {
         }
 
         private int calc_percent (int val) {
-            return val * 100 / max;
+            return (int) Math.round (val * 100.0 / max);
         }
 
         private int calc_actual (float val) {
-            return (int) val * max / 100;
+            return (int) Math.round (val * max / 100);
         }
 
         public int get_max_value () {