diff --git a/ast/src/constant.rs b/ast/src/constant.rs
index 7b40fb1..d81d7fb 100644
--- a/ast/src/constant.rs
+++ b/ast/src/constant.rs
@@ -41,12 +41,13 @@ impl std::fmt::Display for Constant {
         match self {
             Constant::None => f.pad("None"),
             Constant::Bool(b) => f.pad(if *b { "True" } else { "False" }),
-            Constant::Str(s) => {
-                use rustpython_common::escape::Escape;
-                rustpython_common::escape::UnicodeEscape::new_repr(s.as_str()).write_quoted(f)
-            }
+            Constant::Str(s) => rustpython_common::escape::UnicodeEscape::new_repr(s.as_str())
+                .str_repr()
+                .write(f),
             Constant::Bytes(b) => {
-                f.pad(&rustpython_common::bytes::repr(b).map_err(|_err| std::fmt::Error)?)
+                let escape = rustpython_common::escape::AsciiEscape::new_repr(b);
+                let repr = escape.bytes_repr().to_string().unwrap();
+                f.pad(&repr)
             }
             Constant::Int(i) => i.fmt(f),
             Constant::Tuple(tup) => {
diff --git a/ast/src/unparse.rs b/ast/src/unparse.rs
index 1af7bf2..e7e1bce 100644
--- a/ast/src/unparse.rs
+++ b/ast/src/unparse.rs
@@ -509,10 +509,11 @@ impl<'a> Unparser<'a> {
         if is_spec {
             self.unparse_fstring_body(values, is_spec)
         } else {
-            use rustpython_common::escape::Escape;
             self.p("f")?;
             let body = to_string_fmt(|f| Unparser::new(f).unparse_fstring_body(values, is_spec));
-            rustpython_common::escape::UnicodeEscape::new_repr(&body).write_quoted(&mut self.f)
+            rustpython_common::escape::UnicodeEscape::new_repr(&body)
+                .str_repr()
+                .write(&mut self.f)
         }
     }
 }