diff --git a/lib/internal/Magento/Framework/GraphQl/Query/EnumLookup.php b/lib/internal/Magento/Framework/GraphQl/Query/EnumLookup.php
index fb4d9d40b05fa..4afeac9238623 100644
--- a/lib/internal/Magento/Framework/GraphQl/Query/EnumLookup.php
+++ b/lib/internal/Magento/Framework/GraphQl/Query/EnumLookup.php
@@ -52,7 +52,7 @@ public function getEnumValueFromField(string $enumName, string $fieldValue) : st
         $mappedValues = $this->enumDataMapper->getMappedEnums($enumName);
 
         foreach ($enumObject->getValues() as $enumItem) {
-            if (isset($mappedValues[$enumItem->getName()]) && $mappedValues[$enumItem->getName()] == $fieldValue) {
+            if (isset($mappedValues[$enumItem->getName()]) && $mappedValues[$enumItem->getName()] === $fieldValue) {
                 return $enumItem->getValue();
             }
         }