diff --git a/src/IndexService/ProductList/ElasticSearch/AbstractElasticSearch.php b/src/IndexService/ProductList/ElasticSearch/AbstractElasticSearch.php
index 7e70d3a3..70431abc 100644
--- a/src/IndexService/ProductList/ElasticSearch/AbstractElasticSearch.php
+++ b/src/IndexService/ProductList/ElasticSearch/AbstractElasticSearch.php
@@ -28,7 +28,7 @@
 
 abstract class AbstractElasticSearch implements ProductListInterface
 {
-    const LIMIT_UNLIMITED = 'unlimited';
+    const LIMIT_UNLIMITED = -1;
 
     const INTEGER_MAX_VALUE = 2147483647;     // Elasticsearch Integer.MAX_VALUE is 2^31-1
 
@@ -321,7 +321,7 @@ public function getOrderKey(): array|string
     }
 
     /**
-     * Pass "unlimited" to do da Scroll Request
+     * Pass -1 to enable the unlimited scroll request
      *
      * @param int $limit
      *
@@ -329,11 +329,11 @@ public function getOrderKey(): array|string
      */
     public function setLimit(int $limit): void
     {
-        if ($this->limit != $limit) {
+        if ($this->limit !== $limit) {
             $this->products = null;
         }
 
-        if ($limit == static::LIMIT_UNLIMITED) {
+        if ($limit === static::LIMIT_UNLIMITED) {
             $this->limit = 100;
             $this->doScrollRequest = true;
         } else {