diff --git a/CHANGELOG.md b/CHANGELOG.md
index eded3df3..7089f601 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Fix ReviewBlock filter to handle null item inside sellers' array
+
 ## [3.12.3] - 2022-11-23
 
 ### Added
diff --git a/react/components/ReviewBlock.tsx b/react/components/ReviewBlock.tsx
index e6db8adf..af05a58c 100644
--- a/react/components/ReviewBlock.tsx
+++ b/react/components/ReviewBlock.tsx
@@ -131,8 +131,8 @@ const ReviewBlock: FunctionComponent<WrappedComponentProps & any> = ({
       if (!item.sellers) return
       item.sellers = item.sellers.filter(
         (seller: any) =>
-          seller.availability === 'available' ||
-          seller.availability === 'partiallyAvailable'
+          seller?.availability === 'available' ||
+          seller?.availability === 'partiallyAvailable'
       )
     })