1 files changed, 1 insertions, 1 deletions
diff --git a/lib/_stream_readable.js b/lib/_stream_readable.js
index 9678d77f6c..5cdc0864a0 100644
--- a/lib/_stream_readable.js
+++ b/lib/_stream_readable.js
@@ -341,7 +341,7 @@ function howMuchToRead(n, state) {
     return 0;
   if (state.objectMode)
     return 1;
-  if (n !== n) {
+  if (Number.isNaN(n)) {
     // Only flow one buffer at a time
     if (state.flowing && state.length)
       return state.buffer.head.data.length;