diff --git a/.changeset/witty-apes-rescue.md b/.changeset/witty-apes-rescue.md
new file mode 100644
index 0000000000..33c1bbc7c1
--- /dev/null
+++ b/.changeset/witty-apes-rescue.md
@@ -0,0 +1,5 @@
+---
+"@graphcommerce/algolia-products": patch
+---
+
+Prevent errors by returning string instead of array
diff --git a/packages/algolia-products/mesh/algoliaHitToMagentoProduct.ts b/packages/algolia-products/mesh/algoliaHitToMagentoProduct.ts
index 5fb284bacb..6ec97f57b3 100644
--- a/packages/algolia-products/mesh/algoliaHitToMagentoProduct.ts
+++ b/packages/algolia-products/mesh/algoliaHitToMagentoProduct.ts
@@ -147,6 +147,15 @@ export function algoliaHitToMagentoProduct(
     ...rest
   } = additionalProperties
 
+  // Some custom attributes are returned as array while they need to be a string. Flatten those arrays
+  const flattenedCustomAttributes = {}
+  for (const [key, value] of Object.entries(rest)) {
+    if (value !== null && Array.isArray(value) && value?.length > 0) {
+      flattenedCustomAttributes[key] = value.toString()
+      delete rest[key]
+    }
+  }
+
   return {
     redirect_code: 0,
     __typename: algoliaTypeToTypename[type_id as keyof typeof algoliaTypeToTypename],
@@ -187,5 +196,6 @@ export function algoliaHitToMagentoProduct(
     url_key: algoliaUrlToUrlKey(url, storeConfig?.base_link_url),
     url_suffix: storeConfig?.product_url_suffix,
     ...rest,
+    ...flattenedCustomAttributes,
   }
 }