diff --git a/armsrc/lfadc.h b/armsrc/lfadc.h
index 2d7836a38..d394916ea 100644
--- a/armsrc/lfadc.h
+++ b/armsrc/lfadc.h
@@ -23,7 +23,8 @@ size_t lf_detect_gap(size_t max);
 void lf_reset_counter();
 bool lf_get_tag_modulation();
 void lf_wait_periods(size_t periods);
-void lf_init(bool reader);
+//void lf_init(bool reader);
+void lf_init(bool reader, bool simulate);
 void lf_finalize();
 size_t lf_detect_field_drop(size_t max);
 bool lf_manchester_send_bytes(const uint8_t *frame, size_t frame_len);