diff --git a/services/pull/merge_tree.go b/services/pull/merge_tree.go
index 43e1d93fea..d62da43b4b 100644
--- a/services/pull/merge_tree.go
+++ b/services/pull/merge_tree.go
@@ -1,5 +1,4 @@
-// Copyright 2025 The Gitea Authors.
-// All rights reserved.
+// Copyright 2026 The Gitea Authors. All rights reserved.
 // SPDX-License-Identifier: MIT
 
 package pull
@@ -17,10 +16,6 @@ import (
 	"code.gitea.io/gitea/modules/util"
 )
 
-func shouldUseMergeTree(pr *issues_model.PullRequest) bool {
-	return pr.Flow == issues_model.PullRequestFlowGithub && git.DefaultFeatures().SupportGitMergeTree
-}
-
 // checkConflictsMergeTree uses git merge-tree to check for conflicts and if none are found checks if the patch is empty
 // return true if there is conflicts otherwise return false
 // pr.Status and pr.ConflictedFiles will be updated as necessary
diff --git a/services/pull/patch.go b/services/pull/patch.go
index f619f7fecf..8a96cd8f96 100644
--- a/services/pull/patch.go
+++ b/services/pull/patch.go
@@ -71,7 +71,7 @@ func testPullRequestBranchMergeable(pr *issues_model.PullRequest) error {
 	ctx, _, finished := process.GetManager().AddContext(graceful.GetManager().HammerContext(), fmt.Sprintf("testPullRequestBranchMergeable: %s", pr))
 	defer finished()
 
-	if shouldUseMergeTree(pr) {
+	if git.DefaultFeatures().SupportGitMergeTree {
 		return testPullRequestMergeTree(ctx, pr)
 	}