diff --git a/src/Controller/APIController.php b/src/Controller/APIController.php
index 4510fbf8..3965c4f2 100644
--- a/src/Controller/APIController.php
+++ b/src/Controller/APIController.php
@@ -1890,17 +1890,12 @@ class APIController extends Controller
             return $res->getReturnResponse();
         }
 
-        // get first entry 
-        $warranty = current($warranty_results);
-        if ($warranty->isActivated())
+        // activate all entries
+        foreach ($warranty_results as $warranty)
         {
-            $res->setError(true)
-                ->setErrorMessage('Warranty already activated');
-            return $res->getReturnResponse();
+            $warranty->setActivated();
         }
 
-        $warranty->setActivated();
-
         $em->flush();
 
         return $res->getReturnResponse();