diff --git a/AUTHORS b/AUTHORS
index 7c2f8c83..aa7f833d 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -134,4 +134,5 @@ that much better:
  * Martyn Smith
  * Marcelo Anton
  * Aleksey Porfirov
- * Nicolas Trippar
\ No newline at end of file
+ * Nicolas Trippar
+ * Manuel Hermann
\ No newline at end of file
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 3e8f7821..1905a9d3 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -28,6 +28,7 @@ Changes in 0.8.X
 - FileFields now copyable (#198)
 - Querysets now return clones and are no longer edit in place (#56)
 - Added support for $maxDistance (#179)
+- Uses getlasterror to test created on updated saves (#163)
 
 Changes in 0.7.9
 ================
diff --git a/mongoengine/document.py b/mongoengine/document.py
index 03a838bf..69d4d406 100644
--- a/mongoengine/document.py
+++ b/mongoengine/document.py
@@ -219,11 +219,11 @@ class Document(BaseDocument):
 
         doc = self.to_mongo()
 
-        find_delta = ('_id' not in doc or self._created or force_insert)
+        created = ('_id' not in doc or self._created or force_insert)
 
         try:
             collection = self.__class__.objects._collection
-            if find_delta:
+            if created:
                 if force_insert:
                     object_id = collection.insert(doc, safe=safe,
                                                   **write_options)
@@ -289,8 +289,7 @@ class Document(BaseDocument):
 
         self._changed_fields = []
         self._created = False
-        signals.post_save.send(self.__class__, document=self,
-                               created=find_delta)
+        signals.post_save.send(self.__class__, document=self, created=created)
         return self
 
     def cascade_save(self, warn_cascade=None, *args, **kwargs):