diff --git a/database/migrations/2018_07_28_023826_create_checkout_acceptances_table.php b/database/migrations/2018_07_28_023826_create_checkout_acceptances_table.php
index 6d1f1f2b3a..67bc3b800a 100644
--- a/database/migrations/2018_07_28_023826_create_checkout_acceptances_table.php
+++ b/database/migrations/2018_07_28_023826_create_checkout_acceptances_table.php
@@ -19,7 +19,7 @@ class CreateCheckoutAcceptancesTable extends Migration
             $table->morphs('checkoutable');
             $table->integer('assigned_to_id')->unsigned();
 
-            $table->string('signature_filename');
+            $table->string('signature_filename')->nullable();
 
             $table->timestamp('accepted_at')->nullable();
             $table->timestamp('declined_at')->nullable();