diff --git a/lib/tasks/rest_dial.js b/lib/tasks/rest_dial.js
index 926de3d3..cf08801a 100644
--- a/lib/tasks/rest_dial.js
+++ b/lib/tasks/rest_dial.js
@@ -27,7 +27,7 @@ class TaskRestDial extends Task {
   */
   async exec(cs) {
     await super.exec(cs);
-    this.req = cs.req;
+    this.canCancel = true;
 
     this._setCallTimer();
     await this.awaitTaskDone();
@@ -36,15 +36,15 @@ class TaskRestDial extends Task {
   kill(cs) {
     super.kill(cs);
     this._clearCallTimer();
-    if (this.req) {
-      this.req.cancel();
-      this.req = null;
+    if (this.canCancel && cs?.req) {
+      this.canCancel = false;
+      cs.req.cancel();
     }
     this.notifyTaskDone();
   }
 
   async _onConnect(dlg) {
-    this.req = null;
+    this.canCancel = false;
     const cs = this.callSession;
     cs.setDialog(dlg);
 
@@ -79,7 +79,7 @@ class TaskRestDial extends Task {
   _onCallStatus(status) {
     this.logger.debug(`CallStatus: ${status}`);
     if (status >= 200) {
-      this.req = null;
+      this.canCancel = false;
       this._clearCallTimer();
       if (status !== 200) this.notifyTaskDone();
     }