diff --git a/lib/internal/streams/utils.js b/lib/internal/streams/utils.js
index 769eb37749c1b5..1c0b5592597c1d 100644
--- a/lib/internal/streams/utils.js
+++ b/lib/internal/streams/utils.js
@@ -118,17 +118,19 @@ function isReadableFinished(stream, strict) {
 
 function isReadable(stream) {
   if (stream && stream[kIsReadable] != null) return stream[kIsReadable];
-  const r = isReadableNodeStream(stream);
   if (typeof stream?.readable !== 'boolean') return null;
   if (isDestroyed(stream)) return false;
-  return r && stream.readable && !isReadableFinished(stream);
+  return isReadableNodeStream(stream) &&
+    stream.readable &&
+    !isReadableFinished(stream);
 }
 
 function isWritable(stream) {
-  const r = isWritableNodeStream(stream);
   if (typeof stream?.writable !== 'boolean') return null;
   if (isDestroyed(stream)) return false;
-  return r && stream.writable && !isWritableEnded(stream);
+  return isWritableNodeStream(stream) &&
+    stream.writable &&
+    !isWritableEnded(stream);
 }
 
 function isFinished(stream, opts) {