diff --git a/lib/bson/objectid.js b/lib/bson/objectid.js
index 4a52ab66..1e30a7f9 100644
--- a/lib/bson/objectid.js
+++ b/lib/bson/objectid.js
@@ -137,7 +137,7 @@ ObjectID.prototype.generate = function(time) {
   }
 
   // Use pid
-  var pid = (typeof process === 'undefined' ? Math.floor(Math.random() * 100000) : process.pid) % 0xFFFF;
+  var pid = (typeof process === 'undefined' || process.pid === 1 ? Math.floor(Math.random() * 100000) : process.pid) % 0xFFFF;
   var inc = this.get_inc();
   // Buffer used
   var buffer = new Buffer(12);