diff --git a/lib/call-session.js b/lib/call-session.js
index 36a79b8..ce8a4a7 100644
--- a/lib/call-session.js
+++ b/lib/call-session.js
@@ -825,7 +825,9 @@ Duration=${payload.duration} `
     try {
       const reason = req.get('X-Reason');
       const isReleasingMedia = reason && dlg.type === 'uas' && ['release-media', 'anchor-media'].includes(reason);
-      const isFullMediaRelease = isReleasingMedia && process.env.JAMBONES_ENABLE_FULL_MEDIA_RELEASE;
+      const isFullMediaRelease = isReleasingMedia &&
+        reason === 'release-media-entirely';
+
       const fromTag = dlg.type === 'uas' ? this.rtpEngineOpts.uas.tag : this.rtpEngineOpts.uac.tag;
       const toTag = dlg.type === 'uas' ? this.rtpEngineOpts.uac.tag : this.rtpEngineOpts.uas.tag;
       const offerMedia = dlg.type === 'uas' ? this.rtpEngineOpts.uac.mediaOpts : this.rtpEngineOpts.uas.mediaOpts;