diff --git a/src/uu/sum/src/sum.rs b/src/uu/sum/src/sum.rs
index 2366a59d3..5832df778 100644
--- a/src/uu/sum/src/sum.rs
+++ b/src/uu/sum/src/sum.rs
@@ -6,6 +6,7 @@
 // spell-checker:ignore (ToDO) sysv
 
 use clap::{Arg, ArgAction, Command};
+use std::ffi::OsString;
 use std::fs::File;
 use std::io::{ErrorKind, Read, Write, stdin, stdout};
 use std::path::Path;
@@ -67,27 +68,26 @@ fn sysv_sum(mut reader: impl Read) -> std::io::Result<(usize, u16)> {
     Ok((blocks_read, ret as u16))
 }
 
-fn open(name: &str) -> UResult<Box<dyn Read>> {
-    match name {
-        "-" => Ok(Box::new(stdin()) as Box<dyn Read>),
-        _ => {
-            let path = &Path::new(name);
-            if path.is_dir() {
-                return Err(USimpleError::new(
-                    2,
-                    translate!("sum-error-is-directory", "name" => name.maybe_quote()),
-                ));
-            }
-            // Silent the warning as we want to the error message
-            if path.metadata().is_err() {
-                return Err(USimpleError::new(
-                    2,
-                    translate!("sum-error-no-such-file-or-directory", "name" => name.maybe_quote()),
-                ));
-            }
-            let f = File::open(path).map_err_context(String::new)?;
-            Ok(Box::new(f) as Box<dyn Read>)
+fn open(name: &OsString) -> UResult<Box<dyn Read>> {
+    if name == "-" {
+        Ok(Box::new(stdin()) as Box<dyn Read>)
+    } else {
+        let path = Path::new(name);
+        if path.is_dir() {
+            return Err(USimpleError::new(
+                2,
+                translate!("sum-error-is-directory", "name" => name.to_string_lossy().maybe_quote()),
+            ));
         }
+        // Silent the warning as we want to the error message
+        if path.metadata().is_err() {
+            return Err(USimpleError::new(
+                2,
+                translate!("sum-error-no-such-file-or-directory", "name" => name.to_string_lossy().maybe_quote()),
+            ));
+        }
+        let f = File::open(path).map_err_context(String::new)?;
+        Ok(Box::new(f) as Box<dyn Read>)
     }
 }
 
@@ -101,9 +101,9 @@ mod options {
 pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     let matches = uu_app().get_matches_from_localized(args);
 
-    let files: Vec<String> = match matches.get_many::<String>(options::FILE) {
+    let files: Vec<OsString> = match matches.get_many::<OsString>(options::FILE) {
         Some(v) => v.cloned().collect(),
-        None => vec!["-".to_owned()],
+        None => vec![OsString::from("-")],
     };
 
     let sysv = matches.get_flag(options::SYSTEM_V_COMPATIBLE);
@@ -127,7 +127,11 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
 
         let mut stdout = stdout().lock();
         if print_names {
-            writeln!(stdout, "{sum:0width$} {blocks:width$} {file}")?;
+            writeln!(
+                stdout,
+                "{sum:0width$} {blocks:width$} {}",
+                file.to_string_lossy()
+            )?;
         } else {
             writeln!(stdout, "{sum:0width$} {blocks:width$}")?;
         }
@@ -146,7 +150,8 @@ pub fn uu_app() -> Command {
             Arg::new(options::FILE)
                 .action(ArgAction::Append)
                 .hide(true)
-                .value_hint(clap::ValueHint::FilePath),
+                .value_hint(clap::ValueHint::FilePath)
+                .value_parser(clap::value_parser!(OsString)),
         )
         .arg(
             Arg::new(options::BSD_COMPATIBLE)
diff --git a/tests/by-util/test_sum.rs b/tests/by-util/test_sum.rs
index 89c454aff..d4e4e8c55 100644
--- a/tests/by-util/test_sum.rs
+++ b/tests/by-util/test_sum.rs
@@ -2,6 +2,8 @@
 //
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
+#[cfg(target_os = "linux")]
+use std::os::unix::ffi::OsStringExt;
 use uutests::at_and_ucmd;
 use uutests::new_ucmd;
 
@@ -80,3 +82,14 @@ fn test_invalid_metadata() {
         .fails()
         .stderr_is("sum: b: No such file or directory\n");
 }
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_sum_non_utf8_paths() {
+    let (at, mut ucmd) = at_and_ucmd!();
+
+    let filename = std::ffi::OsString::from_vec(vec![0xFF, 0xFE]);
+    std::fs::write(at.plus(&filename), b"test content").unwrap();
+
+    ucmd.arg(&filename).succeeds();
+}