Got rid of __package__; hopefully this is the only thing holding up 2.5 support.

1 files changed, 1 insertions, 1 deletions

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)