diff --git a/lib/fs.js b/lib/fs.js
index aa0792b24b5..cedb9b16148 100644
--- a/lib/fs.js
+++ b/lib/fs.js
@@ -223,7 +223,7 @@ fs.readFileSync = function(path, encoding) {
     if (size !== 0) {
       done = pos >= size;
     } else {
-      done = bytesRead > 0;
+      done = bytesRead >= 0;
     }
   }