diff --git a/httpbin/helpers.py b/httpbin/helpers.py
index cb762b8..d21fd3e 100644
--- a/httpbin/helpers.py
+++ b/httpbin/helpers.py
@@ -47,7 +47,6 @@ ENV_HEADERS = (
     'X-Forwarded-For',
     'X-Forwarded-Protocol',
     'X-Forwarded-Port',
-    'Runscope-Service'
     'X-Request-Id'
 )