diff --git a/lib/_stream_readable.js b/lib/_stream_readable.js
index 54ceaa102a..f7790c6625 100644
--- a/lib/_stream_readable.js
+++ b/lib/_stream_readable.js
@@ -303,7 +303,7 @@ Readable.prototype.pipe = function(dest, pipeOpts) {
       state.pipes = dest;
       break;
     case 1:
-      state.pipes = [ state.pipes, dest ];
+      state.pipes = [state.pipes, dest];
       break;
     default:
       state.pipes.push(dest);
@@ -390,7 +390,7 @@ function pipeOnDrain(src) {
   return function() {
     var dest = this;
     var state = src._readableState;
-    state.awaitDrain --;
+    state.awaitDrain--;
     if (state.awaitDrain === 0)
       flow(src);
   };