diff --git a/lib/call-session.js b/lib/call-session.js
index 2872b17..b7532fa 100644
--- a/lib/call-session.js
+++ b/lib/call-session.js
@@ -544,7 +544,7 @@ Duration=${payload.duration} `
         req.body;
 
       const reason = req.get('X-Reason');
-      const isReleasingMedia = reason && dlg.type === 'uas' && ['release-media', 'anchor-media'].includes(reason);
+      const isReleasingMedia = reason && dlg.type === 'uac' && ['release-media', 'anchor-media'].includes(reason);
       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;