1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sendgrid.js b/lib/sendgrid.js
index 87f898d..2c1ab23 100644
--- a/lib/sendgrid.js
+++ b/lib/sendgrid.js
@@ -74,7 +74,7 @@ SendGrid.prototype.web = function(email, callback) {
     var reqForm = req.form();
     for (var field in form) {
       var value = form[field];
-      if (value.filename) {
+      if (value && value.filename) {
         if (value.cid) {
           reqForm.append("content["+value.filename+"]", value.cid);
         }