diff --git a/tryton/tryton/plugins/__init__.py b/tryton/tryton/plugins/__init__.py
index bf524a8b06..51e815bc53 100644
--- a/tryton/tryton/plugins/__init__.py
+++ b/tryton/tryton/plugins/__init__.py
@@ -14,7 +14,6 @@ MODULES = []
 
 
 def register():
-    global MODULES
     paths = [
         os.path.join(get_config_dir(), 'plugins'),
         os.path.join(CURRENT_DIR, 'plugins'),
diff --git a/tryton/tryton/rpc.py b/tryton/tryton/rpc.py
index c3f1c316ba..a31cf3e58c 100644
--- a/tryton/tryton/rpc.py
+++ b/tryton/tryton/rpc.py
@@ -167,7 +167,6 @@ def reset_password():
 
 
 def execute(*args):
-    global CONNECTION, _USER
     if CONNECTION is None:
         raise TrytonServerError('403')
     try: