diff --git a/migrations/index.ts b/migrations/index.ts
index ee974932..8929e494 100644
--- a/migrations/index.ts
+++ b/migrations/index.ts
@@ -6,8 +6,11 @@ import { Sequelize } from 'sequelize-typescript'
 
 const logger = loggingFactory('db:migrations')
 
+type UpOptions = string | string[] | Umzug.UpToOptions | Umzug.UpDownMigrationsOptions
+type DownOptions = string | string[] | Umzug.DownToOptions | Umzug.UpDownMigrationsOptions
+
 export class Migration {
-  private umzugIns: Umzug.Umzug
+  private readonly umzugIns: Umzug.Umzug
 
   constructor (sequelize: Sequelize) {
     this.umzugIns = new Umzug({
@@ -23,12 +26,12 @@ export class Migration {
   }
 
   // eslint-disable-next-line require-await
-  async up (options?: string | string[] | Umzug.UpToOptions | Umzug.UpDownMigrationsOptions): Promise<Umzug.Migration[]> {
+  async up (options?: UpOptions): Promise<Umzug.Migration[]> {
     return this.umzugIns.up(options as any)
   }
 
   // eslint-disable-next-line require-await
-  async down (options?: string | string[] | Umzug.DownToOptions | Umzug.UpDownMigrationsOptions): Promise<Umzug.Migration[]> {
+  async down (options?: DownOptions): Promise<Umzug.Migration[]> {
     return this.umzugIns.down(options as any)
   }
 
@@ -39,7 +42,9 @@ export class Migration {
   // eslint-disable-next-line require-await
   async pending (): Promise<Umzug.Migration[]> {
     return this.umzugIns.pending().catch(e => {
-      if (e.code === 'ENOENT') return []
+      if (e.code === 'ENOENT') {
+        return []
+      }
       throw e
     })
   }
@@ -55,7 +60,9 @@ export default class DbMigration {
 
   static getInstance (sequelize?: Sequelize): Migration {
     if (!DbMigration.ins) {
-      if (!sequelize) throw new Error('You need to provide Sequelize instance')
+      if (!sequelize) {
+        throw new Error('You need to provide Sequelize instance')
+      }
       DbMigration.ins = new Migration(sequelize)
     }
 
diff --git a/src/cli/db-migration.ts b/src/cli/db-migration.ts
index e24780ef..ff88e956 100644
--- a/src/cli/db-migration.ts
+++ b/src/cli/db-migration.ts
@@ -79,7 +79,9 @@ export default class DbMigrationCommand extends BaseCLICommand {
           : `${parsed.base}.sqlite`
       )
     } else {
-      if (db[db.length - 1] === '/') throw new Error('Path should include the file name')
+      if (db[db.length - 1] === '/') {
+        throw new Error('Path should include the file name')
+      }
       return path.resolve(`${db}${parsed.ext ? '' : '.sqlite'}`)
     }
   }
@@ -118,23 +120,31 @@ export default class DbMigrationCommand extends BaseCLICommand {
 
   async run (): Promise<void> {
     const { flags: originalFlags } = this.parse(DbMigrationCommand)
-    const flags = originalFlags as OutputFlags<typeof DbMigrationCommand.flags>
+    const parsedFlags = originalFlags as OutputFlags<typeof DbMigrationCommand.flags>
 
-    if (flags.db) {
-      config.util.extendDeep(config, { db: `sqlite://${this.resolveDbPath(flags.db)}` })
+    if (parsedFlags.db) {
+      config.util.extendDeep(config, { db: `sqlite://${this.resolveDbPath(parsedFlags.db)}` })
     }
 
-    if (flags.generate) this.generateMigration(flags.generate)
+    if (parsedFlags.generate) {
+      this.generateMigration(parsedFlags.generate)
+    }
 
     // Init database connection
     const sequelize = sequelizeFactory()
     DbMigration.getInstance(sequelize)
 
-    if (!flags.up && !flags.down && !flags.generate) throw new Error('One of \'--generate, --up, --down\'  required')
+    if (!parsedFlags.up && !parsedFlags.down && !parsedFlags.generate) {
+      throw new Error('One of \'--generate, --up, --down\'  required')
+    }
 
-    if (flags.up) await this.migrate(flags.migration, flags)
+    if (parsedFlags.up) {
+      await this.migrate(parsedFlags.migration, parsedFlags)
+    }
 
-    if (flags.down) await this.undo(flags.migration, flags)
+    if (parsedFlags.down) {
+      await this.undo(parsedFlags.migration, parsedFlags)
+    }
 
     this.exit()
   }
diff --git a/src/sequelize.ts b/src/sequelize.ts
index bb624178..35053e52 100644
--- a/src/sequelize.ts
+++ b/src/sequelize.ts
@@ -60,7 +60,7 @@ export default async function (app: Application): Promise<void> {
 
   // Run migration
   logger.info('Run DB Migrations')
-  await DbMigration.getInstance(app.get('sequelizeSync')).up()
+  await DbMigration.getInstance(sequelize).up()
 
   app.setup = function (...args): ReturnType<Application['setup']> {
     const result = oldSetup.apply(this, args)