diff --git a/src/string.rs b/src/string.rs
index 0cc48a7..734cd81 100644
--- a/src/string.rs
+++ b/src/string.rs
@@ -143,23 +143,8 @@ impl fmt::Debug for String {
         }
 
         // Format as bytes
-        write!(f, "b\"")?;
-        for &b in bytes {
-            // https://doc.rust-lang.org/reference/tokens.html#byte-escapes
-            match b {
-                b'\n' => write!(f, "\\n")?,
-                b'\r' => write!(f, "\\r")?,
-                b'\t' => write!(f, "\\t")?,
-                b'\\' | b'"' => write!(f, "\\{}", b as char)?,
-                b'\0' => write!(f, "\\0")?,
-                // ASCII printable
-                0x20..=0x7e => write!(f, "{}", b as char)?,
-                _ => write!(f, "\\x{b:02x}")?,
-            }
-        }
-        write!(f, "\"")?;
-
-        Ok(())
+        write!(f, "b")?;
+        <bstr::BStr as fmt::Debug>::fmt(bstr::BStr::new(&bytes), f)
     }
 }
 
diff --git a/tests/string.rs b/tests/string.rs
index a986c29..456ad84 100644
--- a/tests/string.rs
+++ b/tests/string.rs
@@ -86,7 +86,7 @@ fn test_string_debug() -> Result<()> {
 
     // Invalid utf8
     let s = lua.create_string(b"hello\0world\r\n\t\xF0\x90\x80")?;
-    assert_eq!(format!("{s:?}"), r#"b"hello\0world\r\n\t\xf0\x90\x80""#);
+    assert_eq!(format!("{s:?}"), r#"b"hello\0world\r\n\t\xF0\x90\x80""#);
 
     Ok(())
 }