diff --git a/hal/audio_extn/audio_extn.h b/hal/audio_extn/audio_extn.h
index 94a6ba7..c62226a 100644
--- a/hal/audio_extn/audio_extn.h
+++ b/hal/audio_extn/audio_extn.h
@@ -991,6 +991,7 @@
 #define audio_extn_ffv_deinit_ec_ref_loopback(adev, snd_device) (0)
 #define audio_extn_ffv_check_and_append_ec_ref_dev(device_name) (0)
 #define audio_extn_ffv_get_capture_snd_device() (0)
+#define audio_extn_ffv_append_ec_ref_dev_name(device_name) (0)
 #else
 int32_t audio_extn_ffv_init(struct audio_device *adev);
 int32_t audio_extn_ffv_deinit();
@@ -1012,5 +1013,6 @@
                                           snd_device_t snd_device);
 void audio_extn_ffv_check_and_append_ec_ref_dev(char *device_name);
 snd_device_t audio_extn_ffv_get_capture_snd_device();
+void audio_extn_ffv_append_ec_ref_dev_name(char *device_name);
 #endif
 #endif /* AUDIO_EXTN_H */