diff --git a/assets/js/base/hocs/with-reviews.js b/assets/js/base/hocs/with-reviews.js
index 0c1a50fd882..16de44cc9bc 100644
--- a/assets/js/base/hocs/with-reviews.js
+++ b/assets/js/base/hocs/with-reviews.js
@@ -106,10 +106,14 @@ const withReviews = ( OriginalComponent ) => {
 				offset: reviewsToSkip,
 			};
 
-			if ( categoryIds && categoryIds.length ) {
-				args.category_id = Array.isArray( categoryIds )
-					? categoryIds.join( ',' )
-					: categoryIds;
+			if ( categoryIds ) {
+				const categories = Array.isArray( categoryIds )
+					? categoryIds
+					: JSON.parse( categoryIds );
+
+				args.category_id = Array.isArray( categories )
+					? categories.join( ',' )
+					: categories;
 			}
 
 			if ( productId ) {