diff --git a/audio/test/low_bandwidth_audio_test.py b/audio/test/low_bandwidth_audio_test.py
index 92aca16473..80f32e188b 100755
--- a/audio/test/low_bandwidth_audio_test.py
+++ b/audio/test/low_bandwidth_audio_test.py
@@ -203,7 +203,7 @@ def _RunPolqa(executable_path, reference_file, degraded_file):
   out, err = process.communicate()
 
   # Find the scores in stdout of POLQA.
-  match = re.search(r'\bMOS-LQO:\s+([\d.]+)', out)
+  match = re.search(r'\bMOS-LQO:\s+([\d.]+)', out.decode('utf-8'))
 
   if process.returncode != 0 or not match:
     if process.returncode == 2: