diff --git a/apps/files/tests/Sharing/Source/NodeShareSourceTypeTest.php b/apps/files/tests/Sharing/Source/NodeShareSourceTypeTest.php
index 3311775b4cc..c5cd1026316 100644
--- a/apps/files/tests/Sharing/Source/NodeShareSourceTypeTest.php
+++ b/apps/files/tests/Sharing/Source/NodeShareSourceTypeTest.php
@@ -12,9 +12,9 @@ use NCU\Sharing\ISharingRegistry;
 use NCU\Sharing\ShareAccessContext;
 use NCU\Sharing\Source\ShareSource;
 use OC\Files\Filesystem;
+use OC\Sharing\SharingBackend;
 use OC\User\Database;
 use OCA\Files\Sharing\Source\NodeShareSourceType;
-use OCA\Sharing\SharingBackend;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\Files\IRootFolder;
 use OCP\Files\Node;
diff --git a/apps/sharing/composer/composer/autoload_classmap.php b/apps/sharing/composer/composer/autoload_classmap.php
index 163ae995691..0d6e87b5cfd 100644
--- a/apps/sharing/composer/composer/autoload_classmap.php
+++ b/apps/sharing/composer/composer/autoload_classmap.php
@@ -27,5 +27,4 @@ return array(
     'OCA\\Sharing\\Middleware\\ShareApiEnabledMiddleware' => $baseDir . '/../lib/Middleware/ShareApiEnabledMiddleware.php',
     'OCA\\Sharing\\Migration\\Version1000Date20250929161325' => $baseDir . '/../lib/Migration/Version1000Date20250929161325.php',
     'OCA\\Sharing\\ResponseDefinitions' => $baseDir . '/../lib/ResponseDefinitions.php',
-    'OCA\\Sharing\\SharingBackend' => $baseDir . '/../lib/SharingBackend.php',
 );
diff --git a/apps/sharing/composer/composer/autoload_static.php b/apps/sharing/composer/composer/autoload_static.php
index 00ae4e33b5d..22a3d83d9e4 100644
--- a/apps/sharing/composer/composer/autoload_static.php
+++ b/apps/sharing/composer/composer/autoload_static.php
@@ -42,7 +42,6 @@ class ComposerStaticInitSharing
         'OCA\\Sharing\\Middleware\\ShareApiEnabledMiddleware' => __DIR__ . '/..' . '/../lib/Middleware/ShareApiEnabledMiddleware.php',
         'OCA\\Sharing\\Migration\\Version1000Date20250929161325' => __DIR__ . '/..' . '/../lib/Migration/Version1000Date20250929161325.php',
         'OCA\\Sharing\\ResponseDefinitions' => __DIR__ . '/..' . '/../lib/ResponseDefinitions.php',
-        'OCA\\Sharing\\SharingBackend' => __DIR__ . '/..' . '/../lib/SharingBackend.php',
     );
 
     public static function getInitializer(ClassLoader $loader)
diff --git a/apps/sharing/lib/AppInfo/Application.php b/apps/sharing/lib/AppInfo/Application.php
index 0eec114787d..85974c7c73a 100644
--- a/apps/sharing/lib/AppInfo/Application.php
+++ b/apps/sharing/lib/AppInfo/Application.php
@@ -10,9 +10,9 @@ declare(strict_types=1);
 namespace OCA\Sharing\AppInfo;
 
 use NCU\Sharing\ISharingRegistry;
+use OC\Sharing\SharingBackend;
 use OCA\Sharing\Capabilities;
 use OCA\Sharing\Middleware\ShareApiEnabledMiddleware;
-use OCA\Sharing\SharingBackend;
 use OCP\AppFramework\App;
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index c58f6a0ed30..e8f6829d5ae 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -2296,6 +2296,7 @@ return array(
     'OC\\Share20\\UserDeletedListener' => $baseDir . '/lib/private/Share20/UserDeletedListener.php',
     'OC\\Share20\\UserRemovedListener' => $baseDir . '/lib/private/Share20/UserRemovedListener.php',
     'OC\\Share\\Constants' => $baseDir . '/lib/private/Share/Constants.php',
+    'OC\\Sharing\\SharingBackend' => $baseDir . '/lib/private/Sharing/SharingBackend.php',
     'OC\\Sharing\\SharingManager' => $baseDir . '/lib/private/Sharing/SharingManager.php',
     'OC\\Sharing\\SharingRegistry' => $baseDir . '/lib/private/Sharing/SharingRegistry.php',
     'OC\\Snowflake\\APCuSequence' => $baseDir . '/lib/private/Snowflake/APCuSequence.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 32e4ffee59a..d2b31718dab 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -2337,6 +2337,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OC\\Share20\\UserDeletedListener' => __DIR__ . '/../../..' . '/lib/private/Share20/UserDeletedListener.php',
         'OC\\Share20\\UserRemovedListener' => __DIR__ . '/../../..' . '/lib/private/Share20/UserRemovedListener.php',
         'OC\\Share\\Constants' => __DIR__ . '/../../..' . '/lib/private/Share/Constants.php',
+        'OC\\Sharing\\SharingBackend' => __DIR__ . '/../../..' . '/lib/private/Sharing/SharingBackend.php',
         'OC\\Sharing\\SharingManager' => __DIR__ . '/../../..' . '/lib/private/Sharing/SharingManager.php',
         'OC\\Sharing\\SharingRegistry' => __DIR__ . '/../../..' . '/lib/private/Sharing/SharingRegistry.php',
         'OC\\Snowflake\\APCuSequence' => __DIR__ . '/../../..' . '/lib/private/Snowflake/APCuSequence.php',
diff --git a/apps/sharing/lib/SharingBackend.php b/lib/private/Sharing/SharingBackend.php
similarity index 99%
rename from apps/sharing/lib/SharingBackend.php
rename to lib/private/Sharing/SharingBackend.php
index aa196bc00ac..bb6db33cefb 100644
--- a/apps/sharing/lib/SharingBackend.php
+++ b/lib/private/Sharing/SharingBackend.php
@@ -7,7 +7,7 @@
 
 declare(strict_types=1);
 
-namespace OCA\Sharing;
+namespace OC\Sharing;
 
 use Exception;
 use NCU\Sharing\Exception\ShareInvalidException;
diff --git a/lib/private/Sharing/SharingManager.php b/lib/private/Sharing/SharingManager.php
index e4d77626b20..62f77fcccc2 100644
--- a/lib/private/Sharing/SharingManager.php
+++ b/lib/private/Sharing/SharingManager.php
@@ -28,7 +28,6 @@ use NCU\Sharing\ShareState;
 use NCU\Sharing\ShareUser;
 use NCU\Sharing\Source\ShareSource;
 use OC\Core\Sharing\Permission\ReshareSharePermissionType;
-use OCA\Sharing\SharingBackend;
 use OCP\EventDispatcher\Event;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\EventDispatcher\IEventListener;
diff --git a/tests/Core/Sharing/Recipient/GroupShareRecipientTypeTest.php b/tests/Core/Sharing/Recipient/GroupShareRecipientTypeTest.php
index 954e5835359..16e83cb7128 100644
--- a/tests/Core/Sharing/Recipient/GroupShareRecipientTypeTest.php
+++ b/tests/Core/Sharing/Recipient/GroupShareRecipientTypeTest.php
@@ -15,7 +15,7 @@ use NCU\Sharing\Recipient\ShareRecipient;
 use NCU\Sharing\ShareAccessContext;
 use OC\Core\Sharing\Recipient\GroupShareRecipientType;
 use OC\Group\Database;
-use OCA\Sharing\SharingBackend;
+use OC\Sharing\SharingBackend;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\IDBConnection;
 use OCP\IGroup;
diff --git a/tests/Core/Sharing/Recipient/UserShareRecipientTypeTest.php b/tests/Core/Sharing/Recipient/UserShareRecipientTypeTest.php
index 4cc6f232ea7..97cccdde43e 100644
--- a/tests/Core/Sharing/Recipient/UserShareRecipientTypeTest.php
+++ b/tests/Core/Sharing/Recipient/UserShareRecipientTypeTest.php
@@ -14,8 +14,8 @@ use NCU\Sharing\ISharingRegistry;
 use NCU\Sharing\Recipient\ShareRecipient;
 use NCU\Sharing\ShareAccessContext;
 use OC\Core\Sharing\Recipient\UserShareRecipientType;
+use OC\Sharing\SharingBackend;
 use OC\User\Database;
-use OCA\Sharing\SharingBackend;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\IDBConnection;
 use OCP\IUser;
diff --git a/tests/lib/Sharing/AbstractSharingManagerTests.php b/tests/lib/Sharing/AbstractSharingManagerTests.php
index dddd33f6ed0..6584b5506ad 100644
--- a/tests/lib/Sharing/AbstractSharingManagerTests.php
+++ b/tests/lib/Sharing/AbstractSharingManagerTests.php
@@ -19,7 +19,7 @@ use NCU\Sharing\ShareAccessContext;
 use NCU\Sharing\ShareState;
 use NCU\Sharing\Source\ShareSource;
 use OC\Core\Sharing\Permission\ReshareSharePermissionType;
-use OCA\Sharing\SharingBackend;
+use OC\Sharing\SharingBackend;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\HintException;
 use OCP\IDBConnection;