diff --git a/doc/api/stream.md b/doc/api/stream.md
index bd4573e487f1ad..77afb18ff566f2 100644
--- a/doc/api/stream.md
+++ b/doc/api/stream.md
@@ -1035,7 +1035,7 @@ readable.on('readable', function() {
   // There is some data to read now.
   let data;
 
-  while (data = this.read()) {
+  while ((data = this.read()) !== null) {
     console.log(data);
   }
 });