diff --git a/src/Bundle/ChillBudgetBundle/Calculator/CalculatorInterface.php b/src/Bundle/ChillBudgetBundle/Calculator/CalculatorInterface.php
index 9acb2ff86..2662b896a 100644
--- a/src/Bundle/ChillBudgetBundle/Calculator/CalculatorInterface.php
+++ b/src/Bundle/ChillBudgetBundle/Calculator/CalculatorInterface.php
@@ -11,7 +11,6 @@ declare(strict_types=1);
 
 namespace Chill\BudgetBundle\Calculator;
 
-use Chill\BudgetBundle\Entity\AbstractElement;
 use Chill\BudgetBundle\Entity\Charge;
 use Chill\BudgetBundle\Entity\Resource;
 
diff --git a/src/Bundle/ChillBudgetBundle/Calculator/CalculatorManager.php b/src/Bundle/ChillBudgetBundle/Calculator/CalculatorManager.php
index 934c22e36..7987bdfdf 100644
--- a/src/Bundle/ChillBudgetBundle/Calculator/CalculatorManager.php
+++ b/src/Bundle/ChillBudgetBundle/Calculator/CalculatorManager.php
@@ -12,6 +12,8 @@ declare(strict_types=1);
 namespace Chill\BudgetBundle\Calculator;
 
 use Chill\BudgetBundle\Entity\AbstractElement;
+use Chill\BudgetBundle\Entity\Charge;
+use Chill\BudgetBundle\Entity\Resource;
 use OutOfBoundsException;
 
 use function array_key_exists;
@@ -21,11 +23,14 @@ use function implode;
 class CalculatorManager
 {
     /**
-     * @var CalculatorInterface[]
+     * @var array<string, CalculatorInterface>
      */
-    protected $calculators = [];
+    private array $calculators = [];
 
-    protected $defaultCalculator = [];
+    /**
+     * @var string[]
+     */
+    private array $defaultCalculator = [];
 
     public function addCalculator(CalculatorInterface $calculator, bool $default)
     {
@@ -37,7 +42,7 @@ class CalculatorManager
     }
 
     /**
-     * @param AbstractElement[] $elements
+     * @param array<Resource|Charge> $elements
      *
      * @return CalculatorResult[]
      */
@@ -46,23 +51,17 @@ class CalculatorManager
         $results = [];
 
         foreach ($this->defaultCalculator as $alias) {
-            $calculator = $this->calculators[$alias];
-            $result = $calculator->calculate($elements);
+            $result = $this->getCalculator($alias)->calculate($elements);
 
             if (null !== $result) {
-                $results[$calculator->getAlias()] = $result;
+                $results[$alias] = $result;
             }
         }
 
         return $results;
     }
 
-    /**
-     * @param string $alias
-     *
-     * @return CalculatorInterface
-     */
-    public function getCalculator($alias)
+    public function getCalculator(string $alias): CalculatorInterface
     {
         if (false === array_key_exists($alias, $this->calculators)) {
             throw new OutOfBoundsException("The calculator with alias '{$alias}' does "
diff --git a/src/Bundle/ChillBudgetBundle/migrations/Version20230328155010.php b/src/Bundle/ChillBudgetBundle/migrations/Version20230328155010.php
new file mode 100644
index 000000000..ed524940e
--- /dev/null
+++ b/src/Bundle/ChillBudgetBundle/migrations/Version20230328155010.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\Migrations\Budget;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20230328155010 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'budget elements: restore the previous type to resource/charge kind if applicable';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql(<<<'SQL'
+            WITH type_to_id AS (
+                SELECT DISTINCT charge.charge_id AS id, charge.type
+                FROM chill_budget.charge
+                WHERE type <> ''
+            )
+            UPDATE chill_budget.charge_type
+                SET kind = type_to_id.type
+                FROM type_to_id
+                WHERE type_to_id.type <> '' AND type_to_id.id = charge_type.id
+        SQL);
+
+        $this->addSql(<<<'SQL'
+            WITH type_to_id AS (
+                SELECT DISTINCT resource.resource_id AS id, resource.type
+                FROM chill_budget. resource
+                WHERE type <> ''
+            )
+            UPDATE chill_budget.resource_type
+                SET kind = type_to_id.type
+                FROM type_to_id
+                WHERE type_to_id.type <> '' AND type_to_id.id = resource_type.id
+        SQL);
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql("UPDATE chill_budget.resource_type SET kind=md5(random()::text) WHERE kind = ''");
+        $this->addSql("UPDATE chill_budget.charge_type SET kind=md5(random()::text) WHERE kind = ''");
+    }
+}
diff --git a/tests/app b/tests/app
index 5e478fdfb..5b35e7ccd 160000
--- a/tests/app
+++ b/tests/app
@@ -1 +1 @@
-Subproject commit 5e478fdfbf429baf3ce852ae69eb1f7101b1b416
+Subproject commit 5b35e7ccd0735e5593835e28acbf82386c18e1b6