--- a/devtools/server/actors/highlighters/css-grid.js
+++ b/devtools/server/actors/highlighters/css-grid.js
@@ -1151,17 +1151,16 @@ CssGridHighlighter.prototype = extend(Au
    *         The grid fragment of the grid container.
    * @param  {Object} area
    *         The area overlay to render on the CSS highlighter canvas.
    */
   renderGridAreaName(fragment, area) {
     let { rowStart, rowEnd, columnStart, columnEnd } = area;
     let { devicePixelRatio } = this.win;
     let displayPixelRatio = getDisplayPixelRatio(this.win);
-    let currentZoom = getCurrentZoom(this.win);
     let offset = (displayPixelRatio / 2) % 1;
     let fontSize = (GRID_AREA_NAME_FONT_SIZE * displayPixelRatio);
 
     this.ctx.save();
 
     let canvasX = Math.round(this._canvasPosition.x * devicePixelRatio);
     let canvasY = Math.round(this._canvasPosition.y * devicePixelRatio);
     this.ctx.translate(offset - canvasX, offset - canvasY);