diff --git a/.build b/.build
index ca7bf83..da2d398 100644
--- a/.build
+++ b/.build
@@ -1 +1 @@
-13
\ No newline at end of file
+14
\ No newline at end of file
diff --git a/pylast.py b/pylast.py
index 5720595..7bbbd7c 100644
--- a/pylast.py
+++ b/pylast.py
@@ -1025,6 +1025,9 @@ class _BaseObject(object):
 		"""Returns the most common set of parameters between all objects."""
 		
 		return {}
+	
+	def __hash__(self):
+		return hash(self.network) + hash("".join(self._get_params().keys() + self._get_params().values()))
 
 class _Taggable(object):
 	"""Common functions for classes with tags."""