diff --git a/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/br_wrapper.c b/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/br_wrapper.c
index 2b0cc31..3bc07be 100644
--- a/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/br_wrapper.c
+++ b/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/br_wrapper.c
@@ -38,7 +38,11 @@ void dsp_main (chanend_t c_data) {
     int mic_output[I2S_CHANS_ADC];
     int count = 0;
     unsigned ch[1] = {2};
+#if F1_MUSIC_UAC2 == 1
+    unsigned current_sample_freq = 0;
+#else
     unsigned current_sample_freq = 48000;
+#endif
     while (1) {
         unsigned sample_freq = (unsigned)chan_in_word(c_data);
         chan_in_buf_word (c_data , play_input, 2);