diff --git a/src/extensions/scratch3_pen/index.js b/src/extensions/scratch3_pen/index.js
index 2777926d..f46bf141 100644
--- a/src/extensions/scratch3_pen/index.js
+++ b/src/extensions/scratch3_pen/index.js
@@ -705,7 +705,7 @@ class Scratch3PenBlocks {
         const colorValue = hueValue / 2;
         this._setOrChangeColorParam(ColorParam.COLOR, colorValue, penState, false);
         this._setOrChangeColorParam(ColorParam.TRANSPARENCY, 0, penState, false);
-        this._legacyUpdatePenColor(penState);        
+        this._legacyUpdatePenColor(penState);
     }
 
     /**