diff --git a/ffmpeg/nodes.py b/ffmpeg/nodes.py
index 6da318b..d98b393 100644
--- a/ffmpeg/nodes.py
+++ b/ffmpeg/nodes.py
@@ -344,7 +344,7 @@ class MergeOutputsNode(Node):
 
 class HeaderNode (Node):
 
-    def __init__(self, name: str = None, args=[], kwargs={}):
+    def __init__(self, name, args=[], kwargs={}):
         super(HeaderNode, self).__init__(
             stream_spec=None,
             name=name,
diff --git a/ffmpeg/tests/test_facebook.py b/ffmpeg/tests/test_facebook.py
index 9ac6cf0..a670912 100644
--- a/ffmpeg/tests/test_facebook.py
+++ b/ffmpeg/tests/test_facebook.py
@@ -16,7 +16,7 @@ except ImportError:
     from unittest import mock  # python 3
 
 
-def pip_to_rtmp(url: str):
+def pip_to_rtmp(url):
     """ Capture Facetime camera and screen in macOS and stream it to facebook
     """
     facetime_camera_input = (