diff --git a/doc/api/util.md b/doc/api/util.md
index af75ecb9f62cc6..525b567abebe7e 100644
--- a/doc/api/util.md
+++ b/doc/api/util.md
@@ -777,8 +777,14 @@ const million = 1_000_000;
 const bigNumber = 123_456_789n;
 const bigDecimal = 1_234.123_45;
 
-console.log(thousand, million, bigNumber, bigDecimal);
-// 1_000 1_000_000 123_456_789n 1_234.123_45
+console.log(inspect(thousand, { numericSeparator: true }));
+// 1_000
+console.log(inspect(million, { numericSeparator: true }));
+// 1_000_000
+console.log(inspect(bigNumber, { numericSeparator: true }));
+// 123_456_789n
+console.log(inspect(bigDecimal, { numericSeparator: true }));
+// 1_234.123_45
 ```
 
 `util.inspect()` is a synchronous method intended for debugging. Its maximum