diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index 3f80b4d..6a7acae 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -48,19 +48,9 @@ impl Default for ParserOptions {
     }
 }
 
+#[cfg(feature = "oneio")]
 impl BgpkitParser<Box<dyn Read + Send>> {
-    /// Creating a new parser from an object that implements [Read] trait.
-    pub fn new_with_reader(reader: Box<dyn Read + Send>) -> Self {
-        BgpkitParser {
-            reader,
-            core_dump: false,
-            filters: vec![],
-            options: ParserOptions::default(),
-        }
-    }
-
     /// Creating a new parser from a object that implements [Read] trait.
-    #[cfg(feature = "oneio")]
     pub fn new(path: &str) -> Result<Self, ParserErrorWithBytes> {
         let reader = get_reader(path)?;
         Ok(BgpkitParser {
@@ -76,7 +66,6 @@ impl BgpkitParser<Box<dyn Read + Send>> {
     /// The cache file name is generated by the following format: `cache-<crc32 of file name>-<file name>`.
     /// For example, the remote file `http://archive.routeviews.org/route-views.chile/bgpdata/2023.03/RIBS/rib.20230326.0600.bz2`
     /// will be cached as `cache-682cb1eb-rib.20230326.0600.bz2` in the cache directory.
-    #[cfg(feature = "oneio")]
     pub fn new_cached(path: &str, cache_dir: &str) -> Result<Self, ParserErrorWithBytes> {
         let file_name = path.rsplit('/').next().unwrap().to_string();
         let new_file_name = format!(
@@ -108,7 +97,7 @@ fn add_suffix_to_filename(filename: &str, suffix: &str) -> String {
 }
 
 impl<R: Read> BgpkitParser<R> {
-    /// Creating a new parser from a object that implements [Read] trait.
+    /// Creating a new parser from an object that implements [Read] trait.
     pub fn from_reader(reader: R) -> Self {
         BgpkitParser {
             reader,
@@ -167,14 +156,14 @@ mod tests {
 
     #[test]
     fn test_new_with_reader() {
-        // bzip2 reader for compressed file
+        // bzip2 reader for a compressed file
         let reader = oneio::get_reader("http://archive.routeviews.org/route-views.ny/bgpdata/2023.02/UPDATES/updates.20230215.0630.bz2").unwrap();
         assert_eq!(
             12683,
             BgpkitParser::from_reader(reader).into_elem_iter().count()
         );
 
-        // remote reader for uncompressed updates file
+        // remote reader for an uncompressed updates file
         let reader = oneio::get_reader("https://spaces.bgpkit.org/parser/update-example").unwrap();
         assert_eq!(
             8160,