diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go
index ea3619db97..07240c8e69 100644
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@@ -479,6 +479,8 @@ var migrations = []Migration{
 	NewMigration("Improve Action table indices v3", v1_20.ImproveActionTableIndices),
 	// v250 -> v251
 	NewMigration("Change Container Metadata", v1_20.ChangeContainerMetadataMultiArch),
+	// v251 -> v252
+	NewMigration("Fix incorrect owner team unit access mode", v1_20.FixIncorrectOwnerTeamUnitAccessMode),
 }
 
 // GetCurrentDBVersion returns the current db version
diff --git a/models/migrations/v1_20/v251.go b/models/migrations/v1_20/v251.go
new file mode 100644
index 0000000000..7743248a3f
--- /dev/null
+++ b/models/migrations/v1_20/v251.go
@@ -0,0 +1,47 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1_20 //nolint
+
+import (
+	"code.gitea.io/gitea/modules/log"
+
+	"xorm.io/xorm"
+)
+
+func FixIncorrectOwnerTeamUnitAccessMode(x *xorm.Engine) error {
+	type UnitType int
+	type AccessMode int
+
+	type TeamUnit struct {
+		ID         int64    `xorm:"pk autoincr"`
+		OrgID      int64    `xorm:"INDEX"`
+		TeamID     int64    `xorm:"UNIQUE(s)"`
+		Type       UnitType `xorm:"UNIQUE(s)"`
+		AccessMode AccessMode
+	}
+
+	const (
+		// AccessModeOwner owner access
+		AccessModeOwner = 4
+	)
+
+	sess := x.NewSession()
+	defer sess.Close()
+
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+
+	count, err := sess.Table("team_unit").
+		Where("team_id IN (SELECT id FROM team WHERE authorize = ?)", AccessModeOwner).
+		Update(&TeamUnit{
+			AccessMode: AccessModeOwner,
+		})
+	if err != nil {
+		return err
+	}
+	log.Debug("Updated %d owner team unit access mode to belong to owner instead of none", count)
+
+	return sess.Commit()
+}
diff --git a/models/organization/org.go b/models/organization/org.go
index 269b3e8328..fa2a604721 100644
--- a/models/organization/org.go
+++ b/models/organization/org.go
@@ -338,9 +338,10 @@ func CreateOrganization(org *Organization, owner *user_model.User) (err error) {
 	units := make([]TeamUnit, 0, len(unit.AllRepoUnitTypes))
 	for _, tp := range unit.AllRepoUnitTypes {
 		units = append(units, TeamUnit{
-			OrgID:  org.ID,
-			TeamID: t.ID,
-			Type:   tp,
+			OrgID:      org.ID,
+			TeamID:     t.ID,
+			Type:       tp,
+			AccessMode: perm.AccessModeOwner,
 		})
 	}