diff --git a/app/Models/Unidade.php b/app/Models/Unidade.php
new file mode 100644
index 0000000000000000000000000000000000000000..3de7ac0ef5364f6dbcd4b53920dbcd394f03f7b4
--- /dev/null
+++ b/app/Models/Unidade.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Unidade extends Model
+{
+    const ARCOVERDE = 1;
+    const CARUARU = 2;
+    const GARANHUNS = 3;
+    const NAZARE_DA_MATA = 4;
+    const PALMARES = 5;
+    const PETROLINA = 6;
+    const RECIFE = 7;
+    const REGIAO_METROPOLITANA = 8;
+    const SALGUEIRO = 9;
+    const SERRA_TALHADA = 10;
+
+    /**
+     * @param integer $value
+     * @return array|string
+     */
+    public static function listUnidades($value = null)
+    {
+        $values = [
+            self::ARCOVERDE => 'Arcoverde',
+            self::CARUARU => 'Caruaru',
+            self::GARANHUNS => 'Garanhuns',
+            self::NAZARE_DA_MATA => 'Nazaré da Mata',
+            self::PALMARES => 'Palmares',
+            self::PETROLINA => 'Petrolina',
+            self::RECIFE => 'Recife',
+            self::REGIAO_METROPOLITANA => 'Região Metropolitana',
+            self::SALGUEIRO => 'Salgueiro',
+            self::SERRA_TALHADA => 'Serra Talhada',        
+        ];
+
+        return $value != null? $values[$value] : $values;
+    }
+}
diff --git a/database/migrations/2022_02_02_014728_create_curso_in_users_table.php b/database/migrations/2022_02_02_014728_create_curso_in_users_table.php
index 4ac5bd77e8a942f8135357c4c894ebcc5eb337a4..23140422ae4b716c0bec376709db62e22456e531 100644
--- a/database/migrations/2022_02_02_014728_create_curso_in_users_table.php
+++ b/database/migrations/2022_02_02_014728_create_curso_in_users_table.php
@@ -26,7 +26,7 @@ class CreateCursoInUsersTable extends Migration
     public function down()
     {   
         if(Schema::hasColumn('users', 'curso_id')) {
-            Schema::dropColumns('curso_id');
+            Schema::dropColumns('users', ['curso_id']);
         }
     }
 }