diff --git a/Queue/Action/Product/CategoryIdsModifier.php b/Queue/Action/Product/CategoryIdsModifier.php
index 5636175..5408c8a 100644
--- a/Queue/Action/Product/CategoryIdsModifier.php
+++ b/Queue/Action/Product/CategoryIdsModifier.php
@@ -83,7 +83,7 @@ public function handle(Product $product, PimcoreProductInterface $pimcoreProduct
         $mageCatIds = $catCollection->getAllIds();
         $pimcoreProduct->setData('category_ids', $mageCatIds);
 
-        if (count($pimCatIds) !== count($mageCatIds)) {
+        if (is_iterable($pimCatIds) && count($pimCatIds) !== count($mageCatIds)) {
             $existingPimCatIds = [];
             /** @var Category $category */
             foreach ($catCollection as $category) {