diff --git a/src/util.js b/src/util.js
index 66ce2e85bd..ad0a4cd88c 100644
--- a/src/util.js
+++ b/src/util.js
@@ -99,16 +99,20 @@ puts = function (x) {
   print(x.toString() + "\n");
 };
 
+node.debug = function (x) {
+  node.stdio.writeError("DEBUG: " + x.toString() + "\n");
+};
+
+node.error = function (x) {
+  node.stdio.writeError(x.toString() + "\n");
+};
+
 p = function (x) {
   if (x === null) {
-    puts("null");
+    node.error("null");
   } else if (x === NaN) {
-    puts("NaN");
+    node.error("NaN");
   } else {
-    puts(JSON.stringify(x) || "undefined");
+    node.error(JSON.stringify(x) || "undefined");
   }
 };
-
-node.debug = function (x) {
-  node.stdio.writeError("DEBUG: " + x.toString() + "\n");
-};