Restored Python 2.5 support.

2 files changed, 1 insertions, 3 deletions

diff --git a/TODO b/TODO
index 01499c1..a6f444f 100644
--- a/TODO
+++ b/TODO
@@ -1,5 +1,3 @@
-Doesn't work with Python 2.5, which doesn't have __package__.
-
 Bare ampersands should be converted to HTML entities upon output.
 
 Add namespace support.
diff --git a/bs4/builder/__init__.py b/bs4/builder/__init__.py
index 17dcff3..afd49b9 100644
--- a/bs4/builder/__init__.py
+++ b/bs4/builder/__init__.py
@@ -233,7 +233,7 @@ class HTMLTreeBuilder(TreeBuilder):
 def register_treebuilders_from(module):
     """Copy TreeBuilders from the given module into this module."""
     # I'm fairly sure this is not the best way to do this.
-    this_module = sys.modules[__package__]
+    this_module = sys.modules['bs4.builder']
     for name in module.__all__:
         obj = getattr(module, name)