diff --git a/Rust/Egg/build.rs b/Rust/Egg/build.rs
index 93a13bc..e7f02bc 100644
--- a/Rust/Egg/build.rs
+++ b/Rust/Egg/build.rs
@@ -1,6 +1,4 @@
 use std::process::Command;
-use std::ffi::OsStr;
-use std::os::unix::ffi::OsStrExt;
 
 extern crate cc;
 
@@ -8,7 +6,7 @@ fn main() {
     let mut cc = cc::Build::new();
     cc.file("../../C/rev_ffi.c");
     let bytes = Command::new("leanc").args(["--print-cflags"]).output().unwrap().stdout;
-    let s = OsStr::from_bytes(&bytes).to_str().unwrap();
+    let s = String::from_utf8(bytes).unwrap();
     for flag in s.split(" ") {
         let flag = flag.trim();
         cc.flag(flag);