diff --git a/database/migrations/2018_09_03_090023_create_people_table.php b/database/migrations/2018_09_03_090023_create_people_table.php
index 53775f6..724f9b4 100644
--- a/database/migrations/2018_09_03_090023_create_people_table.php
+++ b/database/migrations/2018_09_03_090023_create_people_table.php
@@ -22,7 +22,7 @@ class CreatePeopleTable extends Migration
             $table->string('surname')->nullable();
             
             // Date of birth
-            $table->date('date_of_birth')->nullable()->default();
+            $table->date('date_of_birth')->nullable()->default(null);
             
             // Adress
             $table->string('city')->nullable();