diff --git a/src/fs/file.c b/src/fs/file.c
index c2f8a58..b679284 100644
--- a/src/fs/file.c
+++ b/src/fs/file.c
@@ -35,7 +35,7 @@ file_t *ef_phy = &sef_phy;
 #endif
 
 //puts FCI in the RAPDU
-void process_fci(const file_t *pe, int fmd) {
+void file_process_fci(const file_t *pe, int fmd) {
     res_APDU_size = 0;
     if (fmd) {
         res_APDU[res_APDU_size++] = 0x6f;
@@ -124,7 +124,7 @@ file_t *get_parent(file_t *f) {
     return &file_entries[f->parent];
 }
 
-file_t *search_by_name(uint8_t *name, uint16_t namelen) {
+file_t *file_search_by_name(uint8_t *name, uint16_t namelen) {
     for (file_t *p = file_entries; p != file_last; p++) {
         if (p->name && *p->name == apdu.nc && memcmp(p->name + 1, name, namelen) == 0) {
             return p;
@@ -192,7 +192,7 @@ static uint8_t make_path(const file_t *pe, const file_t *top, uint8_t *path) {
     return depth;
 }
 
-file_t *search_by_path(const uint8_t *pe_path, uint8_t pathlen, const file_t *parent) {
+file_t *file_search_by_path(const uint8_t *pe_path, uint8_t pathlen, const file_t *parent) {
     uint8_t path[MAX_DEPTH * 2];
     if (pathlen > sizeof(path)) {
         return NULL;
@@ -211,7 +211,7 @@ file_t *currentDF = NULL;
 const file_t *selected_applet = NULL;
 bool isUserAuthenticated = false;
 
-bool authenticate_action(const file_t *ef, uint8_t op) {
+bool file_authenticate_action(const file_t *ef, uint8_t op) {
     uint8_t acl = ef->acl[op];
     if (acl == 0x0) {
         return true;
diff --git a/src/fs/low_flash.c b/src/fs/low_flash.c
index 9930e4a..9db5807 100644
--- a/src/fs/low_flash.c
+++ b/src/fs/low_flash.c
@@ -98,7 +98,10 @@ bool flash_available = false;
 
 
 //this function has to be called from the core 0
-void low_flash_task(void) {
+void low_flash_task(void);
+void low_flash_commit(void);
+
+void low_flash_task(void){
     if (mutex_try_enter(&mtx_flash, NULL) == true) {
         if (locked_out == true && flash_available == true && ready_pages > 0) {
             //printf(" DO_FLASH AVAILABLE\n");
diff --git a/src/main.c b/src/main.c
index addbf66..59b19dd 100644
--- a/src/main.c
+++ b/src/main.c
@@ -102,6 +102,7 @@ WEAK int picokey_init(void) {
     return 0;
 }
 
+void execute_tasks(void);
 void execute_tasks(void) {
 #if !defined(ENABLE_EMULATION) && !defined(ESP_PLATFORM)
     tud_task(); // tinyusb device task
diff --git a/src/rng/random.h b/src/rng/random.h
index 1ae3953..7a1526e 100644
--- a/src/rng/random.h
+++ b/src/rng/random.h
@@ -21,6 +21,7 @@
 
 #include <stdlib.h>
 #include <stdint.h>
+#include <stdbool.h>
 
 typedef struct {
     uint32_t index;