--- a/devtools/client/inspector/markup/views/element-editor.js
+++ b/devtools/client/inspector/markup/views/element-editor.js
@@ -643,17 +643,17 @@ ElementEditor.prototype = {
   /**
    * Called when the display badge is clicked. Toggles on the grid highlighter for the
    * selected node if it is a grid container.
    */
   onDisplayBadgeClick: function(event) {
     event.stopPropagation();
 
     const target = event.target;
-    if (target.dataset.display !== "grid" || target.dataset.display !== "inline-grid") {
+    if (target.dataset.display !== "grid" && target.dataset.display !== "inline-grid") {
       return;
     }
 
     this.highlighters.toggleGridHighlighter(this.inspector.selection.nodeFront, "markup");
   },
 
   /**
    * Called when the tag name editor has is done editing.