diff --git a/redash/destinations/__init__.py b/redash/destinations/__init__.py
index 4a24e99103..f59213d7b7 100644
--- a/redash/destinations/__init__.py
+++ b/redash/destinations/__init__.py
@@ -49,7 +49,6 @@ def to_dict(cls):
 
 
 def register(destination_class):
-    global destinations
     if destination_class.enabled():
         logger.debug(
             "Registering %s (%s) destinations.",
diff --git a/redash/query_runner/__init__.py b/redash/query_runner/__init__.py
index 10d6d6edf5..8f6f9deca5 100644
--- a/redash/query_runner/__init__.py
+++ b/redash/query_runner/__init__.py
@@ -409,7 +409,6 @@ def get_response(self, url, auth=None, http_method="get", **kwargs):
 
 
 def register(query_runner_class):
-    global query_runners
     if query_runner_class.enabled():
         logger.debug(
             "Registering %s (%s) query runner.",