diff --git a/src/Controller/PartListsController.php b/src/Controller/PartListsController.php
index 6a59f817..2d2c4b3e 100644
--- a/src/Controller/PartListsController.php
+++ b/src/Controller/PartListsController.php
@@ -86,7 +86,7 @@ class PartListsController extends AbstractController
         }
 
         //If the action handler returned a response, we use it, otherwise we redirect back to the previous page.
-        if ($redirectResponse){
+        if (isset($redirectResponse) && $redirectResponse instanceof Response) {
             return $redirectResponse;
         }
 
diff --git a/src/DataTables/Column/EntityColumn.php b/src/DataTables/Column/EntityColumn.php
index 9fa5d422..d48d6da1 100644
--- a/src/DataTables/Column/EntityColumn.php
+++ b/src/DataTables/Column/EntityColumn.php
@@ -66,13 +66,14 @@ class EntityColumn extends AbstractColumn
 
         $resolver->setDefault('render', function (Options $options) {
             return function ($value, $context) use ($options) {
-                /** @var AbstractNamedDBElement|null $entity */
                 if ($this->accessor->isReadable($context, $options['property'])) {
                     $entity = $this->accessor->getValue($context, $options['property']);
                 } else {
                     $entity = null;
                 }
 
+                /** @var AbstractNamedDBElement|null $entity */
+
                 if (null !== $entity) {
                     if (null !== $entity->getID()) {
                         return sprintf(
diff --git a/src/Entity/ProjectSystem/ProjectBOMEntry.php b/src/Entity/ProjectSystem/ProjectBOMEntry.php
index 12dde6bd..3c874a7b 100644
--- a/src/Entity/ProjectSystem/ProjectBOMEntry.php
+++ b/src/Entity/ProjectSystem/ProjectBOMEntry.php
@@ -48,7 +48,7 @@ class ProjectBOMEntry extends AbstractDBElement
     use TimestampTrait;
 
     /**
-     * @var int
+     * @var float
      * @ORM\Column(type="float", name="quantity")
      * @Assert\Positive()
      */
diff --git a/src/Services/Parts/PartsTableActionHandler.php b/src/Services/Parts/PartsTableActionHandler.php
index bd57282f..2fde40b2 100644
--- a/src/Services/Parts/PartsTableActionHandler.php
+++ b/src/Services/Parts/PartsTableActionHandler.php
@@ -131,9 +131,9 @@ final class PartsTableActionHandler
                 default:
                     throw new InvalidArgumentException('The given action is unknown! ('.$action.')');
             }
-
-            return null;
         }
+
+        return null;
     }
 
     /**