diff --git a/octavia_tempest_plugin/common/constants.py b/octavia_tempest_plugin/common/constants.py
index ee4c16a..3bf8f3c 100644
--- a/octavia_tempest_plugin/common/constants.py
+++ b/octavia_tempest_plugin/common/constants.py
@@ -57,6 +57,7 @@
 INSERT_HEADERS = 'insert_headers'
 X_FORWARDED_FOR = 'X-Forwarded-For'
 X_FORWARDED_PORT = 'X-Forwarded-Port'
+X_FORWARDED_PROTO = 'X-Forwarded-Proto'
 TAGS = 'tags'
 TIMEOUT_CLIENT_DATA = 'timeout_client_data'
 TIMEOUT_MEMBER_CONNECT = 'timeout_member_connect'