diff --git a/src/js/plyr.js b/src/js/plyr.js
index 9e00e836..374251e6 100644
--- a/src/js/plyr.js
+++ b/src/js/plyr.js
@@ -561,8 +561,7 @@ class Plyr {
      * @param {boolean} step - How much to decrease by (between 0 and 1)
      */
     decreaseVolume(step) {
-        const volume = this.media.muted ? 0 : this.volume;
-        this.volume = volume - (is.number(step) ? step : 0);
+        this.increaseVolume(-step);
     }
 
     /**