diff --git a/Ref_Audio_Selector/ref_audio_selector_webui.py b/Ref_Audio_Selector/ref_audio_selector_webui.py
index 27e8922..7ef824f 100644
--- a/Ref_Audio_Selector/ref_audio_selector_webui.py
+++ b/Ref_Audio_Selector/ref_audio_selector_webui.py
@@ -87,7 +87,7 @@ def start_similarity_analysis(work_space_dir, sample_dir, speaker_verification,
         cmd = f'"{python_exec}" Ref_Audio_Selector/tool/speaker_verification/voice_similarity.py '
         cmd += f' -r "{base_voice_path}"'
         cmd += f' -c "{sample_dir}"'
-        cmd += f' -o {similarity_file}'
+        cmd += f' -o "{similarity_file}"'
         cmd += f' -m {speaker_verification}'
 
         logger.info(cmd)