--- a/devtools/client/framework/toolbox-highlighter-utils.js
+++ b/devtools/client/framework/toolbox-highlighter-utils.js
@@ -235,17 +235,17 @@ exports.getHighlighterUtils = function (
     if (isRemoteHighlightable()) {
       yield toolbox.highlighter.showBoxModel(nodeFront, options);
     } else {
       // If the target doesn't have the highlighter actor, revert to the
       // walker's highlight method, which draws a simple outline
       yield toolbox.walker.highlight(nodeFront);
     }
 
-    toolbox.emit("node-highlight", nodeFront, options.toSource());
+    toolbox.emit("node-highlight");
   });
 
   /**
    * This is a convenience method in case you don't have a nodeFront but a
    * valueGrip. This is often the case with VariablesView properties.
    * This method will simply translate the grip into a nodeFront and call
    * highlightNodeFront, so it has the same signature.
    * @see highlightNodeFront