--- a/devtools/shared/protocol.js
+++ b/devtools/shared/protocol.js
@@ -997,17 +997,17 @@ Actor.prototype = extend(Pool.prototype,
    */
   form: function(hint) {
     return { actor: this.actorID };
   },
 
   writeError: function(error) {
     console.error(error);
     if (error.stack) {
-      dump(error.stack);
+      dump(`Error in ${this.actorID} ${error.message}\n${error.stack}\n`);
     }
     this.conn.send({
       from: this.actorID,
       error: error.error || "unknownError",
       message: error.message
     });
   },