diff --git a/test/001_highsnr_stdio_audio/test_multimode_tx.py b/test/001_highsnr_stdio_audio/test_multimode_tx.py
index 3074b3a8..61aa53aa 100644
--- a/test/001_highsnr_stdio_audio/test_multimode_tx.py
+++ b/test/001_highsnr_stdio_audio/test_multimode_tx.py
@@ -122,7 +122,7 @@ for m in modes:
 
             # and at least print the needed time to see which time we needed
             timeneeded = time.time()-starttime
-            print(f"time: {timeneeded}", file=sys.stderr)  
+            print(f"time: {timeneeded} buffer: {len(txbuffer)}", file=sys.stderr)  
        
             
 # and at last check if we had an openend pyaudio instance and close it