diff --git a/pkg/channels/line.go b/pkg/channels/line.go
index 009be68a1..52f78f2f8 100644
--- a/pkg/channels/line.go
+++ b/pkg/channels/line.go
@@ -317,19 +317,19 @@ func (c *LINEChannel) processEvent(event lineEvent) {
 	case "image":
 		localPath := c.downloadContent(msg.ID, "image.jpg")
 		if localPath != "" {
-		mediaPaths = append(mediaPaths, localPath)
+			mediaPaths = append(mediaPaths, localPath)
 			content = "[image]"
 		}
 	case "audio":
 		localPath := c.downloadContent(msg.ID, "audio.m4a")
 		if localPath != "" {
-		mediaPaths = append(mediaPaths, localPath)
+			mediaPaths = append(mediaPaths, localPath)
 			content = "[audio]"
 		}
 	case "video":
 		localPath := c.downloadContent(msg.ID, "video.mp4")
 		if localPath != "" {
-		mediaPaths = append(mediaPaths, localPath)
+			mediaPaths = append(mediaPaths, localPath)
 			content = "[video]"
 		}
 	case "file":
diff --git a/pkg/channels/slack.go b/pkg/channels/slack.go
index d3e400e24..d23e71080 100644
--- a/pkg/channels/slack.go
+++ b/pkg/channels/slack.go
@@ -238,7 +238,7 @@ func (c *SlackChannel) handleMessageEvent(ev *slackevents.MessageEvent) {
 			if localPath == "" {
 				continue
 			}
-		mediaPaths = append(mediaPaths, localPath)
+			mediaPaths = append(mediaPaths, localPath)
 
 			if utils.IsAudioFile(file.Name, file.Mimetype) && c.transcriber != nil && c.transcriber.IsAvailable() {
 				ctx, cancel := context.WithTimeout(c.ctx, 30*time.Second)
diff --git a/pkg/channels/telegram.go b/pkg/channels/telegram.go
index 8681f7295..9e34a6a9d 100644
--- a/pkg/channels/telegram.go
+++ b/pkg/channels/telegram.go
@@ -237,7 +237,7 @@ func (c *TelegramChannel) handleMessage(ctx context.Context, message *telego.Mes
 		photo := message.Photo[len(message.Photo)-1]
 		photoPath := c.downloadPhoto(ctx, photo.FileID)
 		if photoPath != "" {
-		mediaPaths = append(mediaPaths, photoPath)
+			mediaPaths = append(mediaPaths, photoPath)
 			if content != "" {
 				content += "\n"
 			}
@@ -248,7 +248,7 @@ func (c *TelegramChannel) handleMessage(ctx context.Context, message *telego.Mes
 	if message.Voice != nil {
 		voicePath := c.downloadFile(ctx, message.Voice.FileID, ".ogg")
 		if voicePath != "" {
-		mediaPaths = append(mediaPaths, voicePath)
+			mediaPaths = append(mediaPaths, voicePath)
 
 			transcribedText := ""
 			if c.transcriber != nil && c.transcriber.IsAvailable() {
@@ -282,7 +282,7 @@ func (c *TelegramChannel) handleMessage(ctx context.Context, message *telego.Mes
 	if message.Audio != nil {
 		audioPath := c.downloadFile(ctx, message.Audio.FileID, ".mp3")
 		if audioPath != "" {
-		mediaPaths = append(mediaPaths, audioPath)
+			mediaPaths = append(mediaPaths, audioPath)
 			if content != "" {
 				content += "\n"
 			}
@@ -293,7 +293,7 @@ func (c *TelegramChannel) handleMessage(ctx context.Context, message *telego.Mes
 	if message.Document != nil {
 		docPath := c.downloadFile(ctx, message.Document.FileID, "")
 		if docPath != "" {
-		mediaPaths = append(mediaPaths, docPath)
+			mediaPaths = append(mediaPaths, docPath)
 			if content != "" {
 				content += "\n"
 			}
diff --git a/pkg/utils/media_test.go b/pkg/utils/media_test.go
index 05f99a4b1..e77908056 100644
--- a/pkg/utils/media_test.go
+++ b/pkg/utils/media_test.go
@@ -10,13 +10,13 @@ import (
 func TestMediaCleanerRemovesOldFiles(t *testing.T) {
 	// Setup: create a temp media directory with old and new files
 	mediaDir := filepath.Join(os.TempDir(), MediaDir)
-	if err := os.MkdirAll(mediaDir, 0700); err != nil {
+	if err := os.MkdirAll(mediaDir, 0o700); err != nil {
 		t.Fatalf("failed to create media dir: %v", err)
 	}
 
 	// Create an "old" file and backdate its modification time
 	oldFile := filepath.Join(mediaDir, "test_old_file.jpg")
-	if err := os.WriteFile(oldFile, []byte("old"), 0600); err != nil {
+	if err := os.WriteFile(oldFile, []byte("old"), 0o600); err != nil {
 		t.Fatalf("failed to create old file: %v", err)
 	}
 	oldTime := time.Now().Add(-1 * time.Hour)
@@ -26,7 +26,7 @@ func TestMediaCleanerRemovesOldFiles(t *testing.T) {
 
 	// Create a "new" file (just created, so modtime is now)
 	newFile := filepath.Join(mediaDir, "test_new_file.jpg")
-	if err := os.WriteFile(newFile, []byte("new"), 0600); err != nil {
+	if err := os.WriteFile(newFile, []byte("new"), 0o600); err != nil {
 		t.Fatalf("failed to create new file: %v", err)
 	}