diff --git a/matrix_webhook.py b/matrix_webhook.py
index 87b3664..50e1afc 100755
--- a/matrix_webhook.py
+++ b/matrix_webhook.py
@@ -18,7 +18,7 @@ from markdown import markdown
 from nio import AsyncClient
 from nio.exceptions import LocalProtocolError
 
-SERVER_ADDRESS = (os.environ.get('INTERFACE', ''), int(os.environ.get('PORT', 4785)))
+SERVER_ADDRESS = (os.environ.get('HOST', ''), int(os.environ.get('PORT', 4785)))
 MATRIX_URL = os.environ.get('MATRIX_URL', 'https://matrix.org')
 MATRIX_ID = os.environ.get('MATRIX_ID', '@wwm:matrix.org')
 MATRIX_PW = os.environ['MATRIX_PW']