diff --git a/lib/call-session.js b/lib/call-session.js
index 70d9386..e4d633d 100644
--- a/lib/call-session.js
+++ b/lib/call-session.js
@@ -33,7 +33,7 @@ class CallSession extends Emitter {
       this.logger.info('No available feature servers, rejecting call!');
       return this.res.send(480);
     }
-    debug(`using feature server ${featureServer}`);
+    this.logger.debug(`using feature server ${featureServer}`);
 
     this.rtpEngineOpts = makeRtpEngineOpts(this.req, isWSS(this.req), false);
     this.rtpEngineResource = {destroy: this.del.bind(null, this.rtpEngineOpts.common)};
@@ -43,7 +43,7 @@ class CallSession extends Emitter {
     // replace host part of uri if its an ipv4 address, leave it otherwise
     if (/\d{1-3}\.\d{1-3}\.\d{1-3}\.\d{1-3}/.test(obj.host)) {
       host = obj.host;
-      proxy = featureServer;
+      proxy = `sip:${featureServer}`;
     }
     else {
       host = featureServer;
diff --git a/lib/fs-tracking.js b/lib/fs-tracking.js
index debc27c..9f267ef 100644
--- a/lib/fs-tracking.js
+++ b/lib/fs-tracking.js
@@ -10,7 +10,7 @@ module.exports = (srf, logger) => {
   srf.options((req, res) => {
     res.send(200);
     if (req.has('X-FS-Status')) {
-      const uri = `sip:${req.source_address}:${req.source_address}`;
+      const uri = `${req.source_address}:${req.source_address}`;
       const status = req.get('X-FS-Status');
       const calls = req.has('X-FS-Calls') ? parseInt(req.get('X-FS-Calls')) : 0;
       if (status === 'open') {