diff --git a/utils/fgcom/fgcom_external.cxx b/utils/fgcom/fgcom_external.cxx
index efc966d..d2f6fa9 100644
--- a/utils/fgcom/fgcom_external.cxx
+++ b/utils/fgcom/fgcom_external.cxx
@@ -588,7 +588,7 @@ bool lib_init()
     iaxc_set_filters(IAXC_FILTER_AGC | IAXC_FILTER_DENOISE);
     iaxc_set_event_callback(iaxc_callback);
     iaxc_start_processing_thread ();
-//    lib_setSilenceThreshold(_silenceThd);
+    lib_setSilenceThreshold(_silenceThd);
 
     iaxc_input_level_set(0.0);
     iaxc_output_level_set(0.8);