diff --git a/armsrc/em4x50.h b/armsrc/em4x50.h
index 12f0a64d8..9f9b38351 100644
--- a/armsrc/em4x50.h
+++ b/armsrc/em4x50.h
@@ -13,11 +13,6 @@
 
 #include "../include/em4x50.h"
 
-int em4x50_standalone_read(uint32_t *words);
-int em4x50_standalone_brute(uint32_t start, uint32_t stop, uint32_t *pwd);
-bool em4x50_sim_send_listen_window(void);
-bool em4x50_sim_send_word(uint32_t word);
-
 void em4x50_info(em4x50_data_t *etd);
 void em4x50_write(em4x50_data_t *etd);
 void em4x50_writepwd(em4x50_data_t *etd);