diff --git a/src/Entity/Attachments/AttachmentType.php b/src/Entity/Attachments/AttachmentType.php
index 5b7ca60f..dc8de0a0 100644
--- a/src/Entity/Attachments/AttachmentType.php
+++ b/src/Entity/Attachments/AttachmentType.php
@@ -63,7 +63,7 @@ class AttachmentType extends AbstractStructuralDBElement
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: AttachmentTypeAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: AttachmentTypeAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/LabelSystem/LabelProfile.php b/src/Entity/LabelSystem/LabelProfile.php
index c729b661..a504ee0f 100644
--- a/src/Entity/LabelSystem/LabelProfile.php
+++ b/src/Entity/LabelSystem/LabelProfile.php
@@ -70,7 +70,7 @@ class LabelProfile extends AttachmentContainingDBElement
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: AttachmentTypeAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: AttachmentTypeAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/Parts/Category.php b/src/Entity/Parts/Category.php
index 23dd345c..ac810cf8 100644
--- a/src/Entity/Parts/Category.php
+++ b/src/Entity/Parts/Category.php
@@ -120,7 +120,7 @@ class Category extends AbstractPartsContainingDBElement
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: CategoryAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: CategoryAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/Parts/Footprint.php b/src/Entity/Parts/Footprint.php
index ccd5bd9f..4126a63b 100644
--- a/src/Entity/Parts/Footprint.php
+++ b/src/Entity/Parts/Footprint.php
@@ -61,7 +61,7 @@ class Footprint extends AbstractPartsContainingDBElement
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: FootprintAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: FootprintAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/Parts/Manufacturer.php b/src/Entity/Parts/Manufacturer.php
index 373ee950..418b4084 100644
--- a/src/Entity/Parts/Manufacturer.php
+++ b/src/Entity/Parts/Manufacturer.php
@@ -61,7 +61,7 @@ class Manufacturer extends AbstractCompany
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: ManufacturerAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: ManufacturerAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/Parts/MeasurementUnit.php b/src/Entity/Parts/MeasurementUnit.php
index ebb7b0d0..538d4c57 100644
--- a/src/Entity/Parts/MeasurementUnit.php
+++ b/src/Entity/Parts/MeasurementUnit.php
@@ -92,7 +92,7 @@ class MeasurementUnit extends AbstractPartsContainingDBElement
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: MeasurementUnitAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: MeasurementUnitAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/Parts/Storelocation.php b/src/Entity/Parts/Storelocation.php
index a519f6c1..f58f807d 100644
--- a/src/Entity/Parts/Storelocation.php
+++ b/src/Entity/Parts/Storelocation.php
@@ -110,7 +110,7 @@ class Storelocation extends AbstractPartsContainingDBElement
     #[ORM\OneToMany(targetEntity: StorelocationAttachment::class, mappedBy: 'element', cascade: ['persist', 'remove'], orphanRemoval: true)]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: StorelocationAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: StorelocationAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/Parts/Supplier.php b/src/Entity/Parts/Supplier.php
index b50bcd45..4dca8f36 100644
--- a/src/Entity/Parts/Supplier.php
+++ b/src/Entity/Parts/Supplier.php
@@ -93,7 +93,7 @@ class Supplier extends AbstractCompany
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: SupplierAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: SupplierAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/PriceInformations/Currency.php b/src/Entity/PriceInformations/Currency.php
index 6ad526a7..1aec8d8a 100644
--- a/src/Entity/PriceInformations/Currency.php
+++ b/src/Entity/PriceInformations/Currency.php
@@ -86,7 +86,7 @@ class Currency extends AbstractStructuralDBElement
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: CurrencyAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: CurrencyAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/ProjectSystem/Project.php b/src/Entity/ProjectSystem/Project.php
index fd6ac8ba..4d79ee38 100644
--- a/src/Entity/ProjectSystem/Project.php
+++ b/src/Entity/ProjectSystem/Project.php
@@ -95,7 +95,7 @@ class Project extends AbstractStructuralDBElement
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: ProjectAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: ProjectAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/UserSystem/Group.php b/src/Entity/UserSystem/Group.php
index 31c9c26a..01e79498 100644
--- a/src/Entity/UserSystem/Group.php
+++ b/src/Entity/UserSystem/Group.php
@@ -78,7 +78,7 @@ class Group extends AbstractStructuralDBElement implements HasPermissionsInterfa
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: GroupAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: GroupAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;
 
diff --git a/src/Entity/UserSystem/User.php b/src/Entity/UserSystem/User.php
index 70121bf4..54d57d7c 100644
--- a/src/Entity/UserSystem/User.php
+++ b/src/Entity/UserSystem/User.php
@@ -228,7 +228,7 @@ class User extends AttachmentContainingDBElement implements UserInterface, HasPe
     #[ORM\OrderBy(['name' => 'ASC'])]
     protected Collection $attachments;
 
-    #[ORM\OneToOne(targetEntity: UserAttachment::class)]
+    #[ORM\ManyToOne(targetEntity: UserAttachment::class)]
     #[ORM\JoinColumn(name: 'id_preview_attachment', onDelete: 'SET NULL')]
     protected ?Attachment $master_picture_attachment = null;