diff --git a/src/ansys/fluent/core/streaming_services/transcript_streaming.py b/src/ansys/fluent/core/streaming_services/transcript_streaming.py
index a65e20c2c059..bb05ba44b1f8 100644
--- a/src/ansys/fluent/core/streaming_services/transcript_streaming.py
+++ b/src/ansys/fluent/core/streaming_services/transcript_streaming.py
@@ -73,7 +73,7 @@ def _process_streaming(self, started_evt):
                 with self._lock:
                     self._streaming = True
                     transcript += response.transcript
-                    if transcript[-1] == "\n":
+                    if transcript and transcript[-1] == "\n":
                         for callback_map in self._service_callbacks.values():
                             if "keep_new_lines" in callback_map[-1].keys():
                                 if callback_map[-1]["keep_new_lines"]: