diff --git a/lib/tasks/transcribe.js b/lib/tasks/transcribe.js
index 7e4eb881..fdbd9fc9 100644
--- a/lib/tasks/transcribe.js
+++ b/lib/tasks/transcribe.js
@@ -46,6 +46,15 @@ class TaskTranscribe extends SttTask {
 
   async exec(cs, {ep, ep2}) {
     await super.exec(cs, {ep, ep2});
+
+    if (this.data.recognizer.vendor === 'nuance') {
+      this.data.recognizer.nuanceOptions = {
+        // by default, nuance STT will recognize only 1st utterance.
+        // enable multiple allow nuance detact all utterances
+        utteranceDetectionMode: 'multiple',
+        ...this.data.recognizer.nuanceOptions
+      };
+    }
     const {updateSpeechCredentialLastUsed} = require('../utils/db-utils')(this.logger, cs.srf);
 
     if (cs.hasGlobalSttHints) {