diff --git a/src/uu/basenc/src/basenc.rs b/src/uu/basenc/src/basenc.rs
index 0a4ab8ab2a7..6498832274c 100644
--- a/src/uu/basenc/src/basenc.rs
+++ b/src/uu/basenc/src/basenc.rs
@@ -63,7 +63,7 @@ pub fn uu_app() -> Command {
 }
 
 fn parse_cmd_args(args: impl uucore::Args) -> UResult<(Config, Format)> {
-    let matches = uucore::clap_localization::handle_clap_result(uu_app(), args.collect_lossy())?;
+    let matches = uucore::clap_localization::handle_clap_result(uu_app(), args)?;
 
     let encodings = get_encodings();
     let format = encodings
diff --git a/tests/by-util/test_basenc.rs b/tests/by-util/test_basenc.rs
index 783d61bb1b5..52acd35d40b 100644
--- a/tests/by-util/test_basenc.rs
+++ b/tests/by-util/test_basenc.rs
@@ -5,7 +5,7 @@
 
 // spell-checker: ignore (encodings) lsbf msbf
 
-use uutests::new_ucmd;
+use uutests::{at_and_ucmd, new_ucmd};
 
 #[test]
 fn test_z85_not_padded_decode() {
@@ -270,3 +270,31 @@ fn test_z85_length_check() {
         .succeeds()
         .stdout_only("12345678");
 }
+
+#[test]
+fn test_file() {
+    let (at, mut ucmd) = at_and_ucmd!();
+    let filename = "file";
+
+    at.write(filename, "foo");
+
+    ucmd.arg(filename)
+        .arg("--base64")
+        .succeeds()
+        .stdout_is("Zm9v\n");
+}
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_file_with_non_utf8_name() {
+    use std::os::unix::ffi::OsStringExt;
+    let (at, mut ucmd) = at_and_ucmd!();
+
+    let filename = std::ffi::OsString::from_vec(vec![0xFF, 0xFE]);
+    std::fs::write(at.plus(&filename), b"foo").unwrap();
+
+    ucmd.arg(filename)
+        .arg("--base64")
+        .succeeds()
+        .stdout_is("Zm9v\n");
+}