diff --git a/modules/indexer/issues/elasticsearch/elasticsearch.go b/modules/indexer/issues/elasticsearch/elasticsearch.go
index a021d25305..baef644cc1 100644
--- a/modules/indexer/issues/elasticsearch/elasticsearch.go
+++ b/modules/indexer/issues/elasticsearch/elasticsearch.go
@@ -16,7 +16,7 @@ import (
 	"gitea.dev/modules/util"
 )
 
-const issueIndexerLatestVersion = 4
+const issueIndexerLatestVersion = 3
 
 var _ internal.Indexer = &Indexer{}
 
@@ -58,7 +58,6 @@ const (
 			"no_project": { "type": "boolean", "index": true },
 			"poster_id": { "type": "integer", "index": true },
 			"assignee_id": { "type": "integer", "index": true },
-			"assignee_ids": { "type": "integer", "index": true },
 			"mention_ids": { "type": "integer", "index": true },
 			"reviewed_ids": { "type": "integer", "index": true },
 			"review_requested_ids": { "type": "integer", "index": true },
@@ -180,22 +179,11 @@ func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 
 	if options.AssigneeID != "" {
 		if options.AssigneeID == "(any)" {
-			query.Must(es.NewBoolQuery().Should(
-				es.NewRangeQuery("assignee_id").Gte(1),
-				es.NewRangeQuery("assignee_ids").Gte(1),
-			))
+			query.Must(es.NewRangeQuery("assignee_id").Gte(1))
 		} else {
 			// "(none)" becomes 0, it means no assignee
 			assigneeIDInt64, _ := strconv.ParseInt(options.AssigneeID, 10, 64)
-			if options.AssigneeID == "(none)" {
-				query.Must(es.TermQuery("assignee_id", assigneeIDInt64)).
-					MustNot(es.NewRangeQuery("assignee_ids").Gte(1))
-			} else {
-				query.Must(es.NewBoolQuery().Should(
-					es.TermQuery("assignee_id", assigneeIDInt64),
-					es.TermQuery("assignee_ids", assigneeIDInt64),
-				))
-			}
+			query.Must(es.TermQuery("assignee_id", assigneeIDInt64))
 		}
 	}
 
diff --git a/modules/indexer/issues/meilisearch/meilisearch.go b/modules/indexer/issues/meilisearch/meilisearch.go
index 1c07549109..ddde9c89f0 100644
--- a/modules/indexer/issues/meilisearch/meilisearch.go
+++ b/modules/indexer/issues/meilisearch/meilisearch.go
@@ -20,7 +20,7 @@ import (
 )
 
 const (
-	issueIndexerLatestVersion = 6
+	issueIndexerLatestVersion = 5
 
 	// TODO: make this configurable if necessary
 	maxTotalHits = 10000
@@ -75,7 +75,6 @@ func NewIndexer(url, apiKey, indexerName string) *Indexer {
 			"no_project",
 			"poster_id",
 			"assignee_id",
-			"assignee_ids",
 			"mention_ids",
 			"reviewed_ids",
 			"review_requested_ids",
@@ -198,20 +197,11 @@ func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 
 	if options.AssigneeID != "" {
 		if options.AssigneeID == "(any)" {
-			query.And((&inner_meilisearch.FilterOr{}).
-				Or(inner_meilisearch.NewFilterGte("assignee_id", 1)).
-				Or(inner_meilisearch.NewFilterGte("assignee_ids", 1)))
+			query.And(inner_meilisearch.NewFilterGte("assignee_id", 1))
 		} else {
 			// "(none)" becomes 0, it means no assignee
 			assigneeIDInt64, _ := strconv.ParseInt(options.AssigneeID, 10, 64)
-			if options.AssigneeID == "(none)" {
-				query.And(inner_meilisearch.NewFilterEq("assignee_id", assigneeIDInt64)).
-					And(inner_meilisearch.NewFilterNot(inner_meilisearch.NewFilterGte("assignee_ids", 1)))
-			} else {
-				query.And((&inner_meilisearch.FilterOr{}).
-					Or(inner_meilisearch.NewFilterEq("assignee_id", assigneeIDInt64)).
-					Or(inner_meilisearch.NewFilterEq("assignee_ids", assigneeIDInt64)))
-			}
+			query.And(inner_meilisearch.NewFilterEq("assignee_id", assigneeIDInt64))
 		}
 	}