diff --git a/src/target/lpc11xx.c b/src/target/lpc11xx.c
index e8012ea..9205eaf 100644
--- a/src/target/lpc11xx.c
+++ b/src/target/lpc11xx.c
@@ -72,7 +72,7 @@ const struct command_s lpc11xx_cmd_list[] = {
 	{NULL, NULL, NULL}
 };
 
-void lpc11xx_add_flash(target *t, uint32_t addr, size_t len, size_t erasesize, uint32_t iap_entry, uint8_t reserved_pages)
+static void lpc11xx_add_flash(target *t, uint32_t addr, size_t len, size_t erasesize, uint32_t iap_entry, uint8_t reserved_pages)
 {
 	struct lpc_flash *lf = lpc_add_flash(t, addr, len);
 	lf->f.blocksize = erasesize;
diff --git a/src/target/lpc15xx.c b/src/target/lpc15xx.c
index 6607409..0e8f8b3 100644
--- a/src/target/lpc15xx.c
+++ b/src/target/lpc15xx.c
@@ -55,7 +55,7 @@ const struct command_s lpc15xx_cmd_list[] = {
 	{NULL, NULL, NULL}
 };
 
-void lpc15xx_add_flash(target *t, uint32_t addr, size_t len, size_t erasesize)
+static void lpc15xx_add_flash(target *t, uint32_t addr, size_t len, size_t erasesize)
 {
 	struct lpc_flash *lf = lpc_add_flash(t, addr, len);
 	lf->f.blocksize = erasesize;
diff --git a/src/target/lpc17xx.c b/src/target/lpc17xx.c
index f62e381..c191d30 100644
--- a/src/target/lpc17xx.c
+++ b/src/target/lpc17xx.c
@@ -54,7 +54,7 @@ const struct command_s lpc17xx_cmd_list[] = {
 	{NULL, NULL, NULL}
 };
 
-void lpc17xx_add_flash(target *t, uint32_t addr, size_t len, size_t erasesize, unsigned int base_sector)
+static void lpc17xx_add_flash(target *t, uint32_t addr, size_t len, size_t erasesize, unsigned int base_sector)
 {
 	struct lpc_flash *lf = lpc_add_flash(t, addr, len);
 	lf->f.blocksize = erasesize;
diff --git a/src/target/lpc43xx.c b/src/target/lpc43xx.c
index c5a837d..69b4d06 100644
--- a/src/target/lpc43xx.c
+++ b/src/target/lpc43xx.c
@@ -61,7 +61,7 @@ const struct command_s lpc43xx_cmd_list[] = {
 	{NULL, NULL, NULL}
 };
 
-void lpc43xx_add_flash(target *t, uint32_t iap_entry,
+static void lpc43xx_add_flash(target *t, uint32_t iap_entry,
                        uint8_t bank, uint8_t base_sector,
                        uint32_t addr, size_t len, size_t erasesize)
 {
diff --git a/src/target/lpc546xx.c b/src/target/lpc546xx.c
index 00fc6d4..f9cc2a7 100644
--- a/src/target/lpc546xx.c
+++ b/src/target/lpc546xx.c
@@ -76,7 +76,7 @@ const struct command_s lpc546xx_cmd_list[] = {
 	{ NULL, NULL, NULL }
 };
 
-void lpc546xx_add_flash(target *t, uint32_t iap_entry,
+static void lpc546xx_add_flash(target *t, uint32_t iap_entry,
 			uint8_t base_sector, uint32_t addr,
 			size_t len, size_t erasesize)
 {
diff --git a/src/target/rp.c b/src/target/rp.c
index c62bd0a..62b2a14 100644
--- a/src/target/rp.c
+++ b/src/target/rp.c
@@ -263,7 +263,7 @@ static int rp_flash_erase(struct target_flash *f, target_addr addr,
 	return ret;
 }
 
-int rp_flash_write(struct target_flash *f,
+static int rp_flash_write(struct target_flash *f,
                     target_addr dest, const void *src, size_t len)
 {
 	DEBUG_INFO("RP Write %08" PRIx32 " len 0x%" PRIx32 "\n", dest, (uint32_t)len);
diff --git a/src/target/stm32f4.c b/src/target/stm32f4.c
index bc32cc2..a2bd45b 100644
--- a/src/target/stm32f4.c
+++ b/src/target/stm32f4.c
@@ -160,7 +160,7 @@ static void stm32f4_add_flash(target *t,
 	target_add_flash(t, f);
 }
 
-char *stm32f4_get_chip_name(uint32_t idcode)
+static char *stm32f4_get_chip_name(uint32_t idcode)
 {
 	switch(idcode){
 	case ID_STM32F40X: /* F40XxE/G */