diff --git a/armsrc/em4x50.h b/armsrc/em4x50.h
index d786e61c0..f9f1375f2 100644
--- a/armsrc/em4x50.h
+++ b/armsrc/em4x50.h
@@ -21,5 +21,6 @@ void em4x50_info(em4x50_data_t *etd);
 void em4x50_write(em4x50_data_t *etd);
 void em4x50_write_password(em4x50_data_t *etd);
 void em4x50_read(em4x50_data_t *etd);
+void em4x50_wipe(em4x50_data_t *etd);
 
 #endif /* EM4X50_H */