diff --git a/doc/manual/docs-template/how_to.md b/doc/manual/docs-template/how_to.md
index be1b5d5e7..554022e60 100644
--- a/doc/manual/docs-template/how_to.md
+++ b/doc/manual/docs-template/how_to.md
@@ -72,6 +72,12 @@ POSIX platform properties:
 <!-- a name "lst:btstackFeatureConfiguration"></a-->
 <!-- -->
 
+Chipset properties:
+
+| \#define               | Description                                           |
+|------------------------|-------------------------------------------------------|
+| HAVE_BCM_PCM_NBS_16KHZ | NBS is up/downsampled, use 16 kHz sample rate for NBS |
+
 ### ENABLE_* directives {#sec:enableDirectives}
 BTstack properties:
 
diff --git a/src/classic/hfp.c b/src/classic/hfp.c
index eae2a1650..acdb51e65 100644
--- a/src/classic/hfp.c
+++ b/src/classic/hfp.c
@@ -2198,7 +2198,9 @@ void hfp_prepare_for_sco(hfp_connection_t * hfp_connection){
 #endif
 
 #ifdef ENABLE_BCM_PCM_WBS
+#ifndef HAVE_BCM_PCM_NBS_16KHZ
     hfp_connection->bcm_send_write_i2spcm_interface_param = true;
+#endif
     if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){
         hfp_connection->bcm_send_enable_wbs = true;
     }