diff --git a/src/modules/auth/auth.controller.ts b/src/modules/auth/auth.controller.ts
index ce2c34e..74074e4 100644
--- a/src/modules/auth/auth.controller.ts
+++ b/src/modules/auth/auth.controller.ts
@@ -85,8 +85,9 @@ export class AuthController {
   ): Promise<UserEntity> {
     const userId = req.user.id
 
-    return await this.commandBus.execute(new UpdateUserCommand(userId, body, files.avatar?.[0]))
+    return await this.commandBus.execute(new UpdateUserCommand(userId, body, files?.avatar?.[0]))
   }
+
   @ApiOperation({
     description: 'Sign in using email and password. Must have an account to do so.',
     summary: 'Sign in using email and password. Must have an account to do so.',
diff --git a/src/modules/cards/cards.controller.ts b/src/modules/cards/cards.controller.ts
index a68b132..324f005 100644
--- a/src/modules/cards/cards.controller.ts
+++ b/src/modules/cards/cards.controller.ts
@@ -64,7 +64,7 @@ export class CardsController {
     @Body() body: UpdateCardDto
   ): Promise<Card> {
     return this.commandBus.execute(
-      new UpdateCardCommand(id, body, req.user.id, files.answerImg?.[0], files.questionImg?.[0])
+      new UpdateCardCommand(id, body, req.user.id, files?.answerImg?.[0], files?.questionImg?.[0])
     )
   }
 
diff --git a/src/modules/decks/decks.controller.ts b/src/modules/decks/decks.controller.ts
index 3ae8de4..ba40bad 100644
--- a/src/modules/decks/decks.controller.ts
+++ b/src/modules/decks/decks.controller.ts
@@ -123,6 +123,7 @@ export class DecksController {
   remove(@Param('id') id: string, @Req() req): Promise<Deck> {
     return this.commandBus.execute(new DeleteDeckByIdCommand(id, req.user.id))
   }
+
   @ApiOperation({
     description: 'Retrieve paginated cards in a deck',
     summary: 'Retrieve cards in a deck',
@@ -155,11 +156,12 @@ export class DecksController {
     @Param('id') id: string,
     @Req() req,
     @UploadedFiles()
-    files: { questionImg: Express.Multer.File[]; answerImg: Express.Multer.File[] },
-    @Body() card: CreateCardDto
+    @Body()
+    card: CreateCardDto,
+    files?: { questionImg: Express.Multer.File[]; answerImg: Express.Multer.File[] }
   ): Promise<Card> {
     return this.commandBus.execute(
-      new CreateCardCommand(req.user.id, id, card, files.answerImg?.[0], files.questionImg?.[0])
+      new CreateCardCommand(req.user.id, id, card, files?.answerImg?.[0], files?.questionImg?.[0])
     )
   }