diff --git a/pkg/internal/services/posts.go b/pkg/internal/services/posts.go
index 7e393b0..1cef8ea 100644
--- a/pkg/internal/services/posts.go
+++ b/pkg/internal/services/posts.go
@@ -129,15 +129,12 @@ func FilterPostWithUserContext(tx *gorm.DB, user *authm.Account) *gorm.DB {
 }
 
 func FilterPostWithCategory(tx *gorm.DB, alias string) *gorm.DB {
-	subQuery := tx.Table("posts").
-		Select("DISTINCT posts.id").
-		Joins("JOIN post_categories ON posts.id = post_categories.post_id").
+	aliases := strings.Split(alias, ",")
+	return tx.Joins("JOIN post_categories ON posts.id = post_categories.post_id").
 		Joins("JOIN categories ON categories.id = post_categories.category_id").
-		Where("categories.alias IN ?", strings.Split(alias, ","))
-
-	return tx.Table("(?) as cateogry_subquery", subQuery).
-		Joins("JOIN posts ON posts.id = category_subquery.id").
-		Order("posts.published_at DESC")
+		Where("categories.alias IN ?", aliases).
+		Group("posts.id").
+		Having("COUNT(DISTINCT categories.id) = ?", len(aliases))
 }
 
 func FilterPostWithTag(tx *gorm.DB, alias string) *gorm.DB {