diff --git a/src/lib/transports/splunkHEC.js b/src/lib/transports/splunkHEC.js
index 0b44f07..0b66378 100644
--- a/src/lib/transports/splunkHEC.js
+++ b/src/lib/transports/splunkHEC.js
@@ -13,7 +13,6 @@ class SplunkHEC extends winston.Transport {
 			'host': 'localhost',
 			'source': `/var/log/apps/heroku/ft-${process.env.SYSTEM_CODE}.log`,
 			'sourcetype': '_json',
-			'deploymentStage': process.env.DEPLOYMENT_STAGE || 'production',
 			'index': process.env.SPLUNK_INDEX || 'heroku',
 			'event': formattedMessage
 		};