diff --git a/lib/writable-bulk.js b/lib/writable-bulk.js
index 82ae0e8..7b3b6bb 100644
--- a/lib/writable-bulk.js
+++ b/lib/writable-bulk.js
@@ -75,7 +75,7 @@ WritableBulk.prototype._flushBulk = function(callback) {
   var self = this;
   this.bulkExec(this.bulk, function(e, resp) {
     if (e) {
-      self.emit('error', e);
+      self.emit('error', e.toString() + self.bulk.map(e => e.id).join(','));
     }
     if (resp && resp.errors && resp.items) {
       for (var i = 0; i < resp.items.length; i++) {