diff --git a/database/migrations/2018_04_23_000000_add_category_column_invoices_bills.php b/database/migrations/2018_04_23_000000_add_category_column_invoices_bills.php
index 999c37c78..24c9eb6c2 100644
--- a/database/migrations/2018_04_23_000000_add_category_column_invoices_bills.php
+++ b/database/migrations/2018_04_23_000000_add_category_column_invoices_bills.php
@@ -11,22 +11,12 @@ class AddCategoryColumnInvoicesBills extends Migration
      */
     public function up()
     {
-        $driver = Schema::connection($this->getConnection())->getConnection()->getDriverName();
-
-        Schema::table('invoices', function ($table) use($driver) {
-            if($driver === 'sqlite'){
-                $table->integer('category_id')->default();
-            }else{
-                $table->integer('category_id');
-            }
+        Schema::table('invoices', function ($table) {
+            $table->integer('category_id')->default();
         });
 
-        Schema::table('bills', function ($table) use($driver) {
-            if($driver === 'sqlite'){
-                $table->integer('category_id')->default();
-            }else{
-                $table->integer('category_id');
-            }
+        Schema::table('bills', function ($table) {
+            $table->integer('category_id')->default();
         });
     }