diff --git a/models/consistency.go b/models/consistency.go
index 0b9d9fd2c340b..df8b8e48df9a9 100644
--- a/models/consistency.go
+++ b/models/consistency.go
@@ -9,6 +9,7 @@ import (
 	"code.gitea.io/gitea/models/db"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/setting"
 
 	"xorm.io/builder"
 )
@@ -247,3 +248,23 @@ func FixIssueLabelWithOutsideLabels() (int64, error) {
 
 	return res.RowsAffected()
 }
+
+// CountActionCreatedUnixString count actions where created_unix is an empty string
+func CountActionCreatedUnixString() (int64, error) {
+	if setting.Database.UseSQLite3 {
+		return db.GetEngine(db.DefaultContext).Where(`created_unix = ""`).Count(new(Action))
+	}
+	return 0, nil
+}
+
+// FixActionCreatedUnixString set created_unix to zero if it is an empty string
+func FixActionCreatedUnixString() (int64, error) {
+	if setting.Database.UseSQLite3 {
+		res, err := db.GetEngine(db.DefaultContext).Exec(`UPDATE action SET created_unix = 0 WHERE created_unix = ""`)
+		if err != nil {
+			return 0, err
+		}
+		return res.RowsAffected()
+	}
+	return 0, nil
+}
diff --git a/models/consistency_test.go b/models/consistency_test.go
index d49a0132f09e0..d7c6cf97bdc3a 100644
--- a/models/consistency_test.go
+++ b/models/consistency_test.go
@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unittest"
+	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
 )
@@ -33,3 +34,46 @@ func TestDeleteOrphanedObjects(t *testing.T) {
 	assert.NoError(t, err)
 	assert.EqualValues(t, countBefore, countAfter)
 }
+
+func TestConsistencyUpdateAction(t *testing.T) {
+	if !setting.Database.UseSQLite3 {
+		t.Skip("Test is only for SQLite database.")
+	}
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	id := 8
+	unittest.AssertExistsAndLoadBean(t, &Action{
+		ID: int64(id),
+	})
+	_, err := db.GetEngine(db.DefaultContext).Exec(`UPDATE action SET created_unix = "" WHERE id = ?`, id)
+	assert.NoError(t, err)
+	actions := make([]*Action, 0, 1)
+	//
+	// XORM returns an error when created_unix is a string
+	//
+	err = db.GetEngine(db.DefaultContext).Where("id = ?", id).Find(&actions)
+	if assert.Error(t, err) {
+		assert.Contains(t, err.Error(), "type string to a int64: invalid syntax")
+	}
+	//
+	// Get rid of incorrectly set created_unix
+	//
+	count, err := CountActionCreatedUnixString()
+	assert.NoError(t, err)
+	assert.EqualValues(t, 1, count)
+	count, err = FixActionCreatedUnixString()
+	assert.NoError(t, err)
+	assert.EqualValues(t, 1, count)
+
+	count, err = CountActionCreatedUnixString()
+	assert.NoError(t, err)
+	assert.EqualValues(t, 0, count)
+	count, err = FixActionCreatedUnixString()
+	assert.NoError(t, err)
+	assert.EqualValues(t, 0, count)
+
+	//
+	// XORM must be happy now
+	//
+	assert.NoError(t, db.GetEngine(db.DefaultContext).Where("id = ?", id).Find(&actions))
+	unittest.CheckConsistencyFor(t, &Action{})
+}
diff --git a/modules/doctor/dbconsistency.go b/modules/doctor/dbconsistency.go
index cd34994e1a832..a7c8312e07199 100644
--- a/modules/doctor/dbconsistency.go
+++ b/modules/doctor/dbconsistency.go
@@ -142,6 +142,12 @@ func checkDBConsistency(logger log.Logger, autofix bool) error {
 			Fixer:        models.FixIssueLabelWithOutsideLabels,
 			FixedMessage: "Removed",
 		},
+		{
+			Name:         "Action with created_unix set as an empty string",
+			Counter:      models.CountActionCreatedUnixString,
+			Fixer:        models.FixActionCreatedUnixString,
+			FixedMessage: "Set to zero",
+		},
 	}
 
 	// TODO: function to recalc all counters
@@ -177,6 +183,9 @@ func checkDBConsistency(logger log.Logger, autofix bool) error {
 		// find access without repository
 		genericOrphanCheck("Access entries without existing repository",
 			"access", "repository", "access.repo_id=repository.id"),
+		// find action without repository
+		genericOrphanCheck("Action entries without existing repository",
+			"action", "repository", "action.repo_id=repository.id"),
 	)
 
 	for _, c := range consistencyChecks {