diff --git a/src/Services/TemplateService.php b/src/Services/TemplateService.php
index accd2cafc..e2fba9823 100644
--- a/src/Services/TemplateService.php
+++ b/src/Services/TemplateService.php
@@ -217,6 +217,10 @@ public function isCheapestSorting()
         $sorting = $sortingHelper->mapToInnerSorting($sorting);
 
         $dynamicInheritSorting = $templateConfigRepository->get('sorting.dynamicInherit', []);
+        if (is_string($dynamicInheritSorting)) {
+            $dynamicInheritSorting = explode(',' , $dynamicInheritSorting);
+        }
+
         if (in_array($sorting, $dynamicInheritSorting)) {
             if ($sorting === 'filter.prices.price_asc') {
                 return true;