diff --git a/src/file_readers/common/sql_reader/metadata.rs b/src/file_readers/common/sql_reader/metadata.rs
index a398f13..a3b4839 100644
--- a/src/file_readers/common/sql_reader/metadata.rs
+++ b/src/file_readers/common/sql_reader/metadata.rs
@@ -27,7 +27,7 @@ fn read_tof_max_index(connection: &Connection) -> u32 {
             |row| row.get(0),
         )
         .unwrap();
-    let mut tof_max_index: u32 = tof_max_index_string.parse().unwrap();
+    let tof_max_index: u32 = tof_max_index_string.parse().unwrap();
     tof_max_index
 }
 
diff --git a/src/file_readers/file_formats.rs b/src/file_readers/file_formats.rs
index 0ab4472..a1f4440 100644
--- a/src/file_readers/file_formats.rs
+++ b/src/file_readers/file_formats.rs
@@ -3,7 +3,6 @@ use std::{fs, path::PathBuf};
 use crate::{io::readers::frame_reader::FrameReader, ms_data::Frame};
 use rayon::iter::ParallelIterator;
 
-use super::common::sql_reader::SqlReader;
 pub enum FileFormat {
     DFolder(PathBuf),
     MS2Folder(PathBuf),
diff --git a/src/io/readers.rs b/src/io/readers.rs
index 5a5f8b0..34126cf 100644
--- a/src/io/readers.rs
+++ b/src/io/readers.rs
@@ -1,2 +1,3 @@
-pub(crate) mod file_readers;
+// pub(crate) mod file_readers;
+pub mod file_readers;
 pub mod frame_reader;