diff --git a/backend/storage/storage.go b/backend/storage/storage.go
index a2eb9c1..3636c79 100644
--- a/backend/storage/storage.go
+++ b/backend/storage/storage.go
@@ -52,7 +52,7 @@ func (s *Storage) List() ([]string, error) {
 		return nil, fmt.Errorf("failed to read data directory: %w", err)
 	}
 
-	var files []string
+	files := make([]string, 0)
 	for _, entry := range entries {
 		if !entry.IsDir() && strings.HasSuffix(entry.Name(), ".md") {
 			files = append(files, strings.TrimSuffix(entry.Name(), ".md"))