diff --git a/library/std/src/sys/unix/os.rs b/library/std/src/sys/unix/os.rs
index 4a077e2151ed9..ce2c4e88c7e5a 100644
--- a/library/std/src/sys/unix/os.rs
+++ b/library/std/src/sys/unix/os.rs
@@ -223,7 +223,7 @@ where
 
 impl fmt::Display for JoinPathsError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "path segment contains separator `{}`", PATH_SEPARATOR)
+        write!(f, "path segment contains separator `{}`", char::from(PATH_SEPARATOR))
     }
 }