diff --git a/application.c b/application.c
index 9e5e3d4..4776701 100644
--- a/application.c
+++ b/application.c
@@ -279,7 +279,7 @@ static void process_command(char* str)
 void main(void);
 void main(void)
 {
-	rcc_clock_setup_in_hse_8mhz_out_72mhz(); // use 8 MHz high speed external clock to generate 72 MHz internal clock
+	rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]); // use 8 MHz high speed external clock to generate 72 MHz internal clock
 
 #if DEBUG
 	// enable functionalities for easier debug
diff --git a/bootloader.c b/bootloader.c
index 6aa3416..37cc114 100644
--- a/bootloader.c
+++ b/bootloader.c
@@ -83,7 +83,7 @@ void main(void)
 		(*(void(**)(void))((uint32_t)application + 4))(); // start application (by jumping to the reset function which address is stored as second entry of the vector table)
 	}
 
-	rcc_clock_setup_in_hse_8mhz_out_72mhz(); // start main clock
+	rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]); // start main clock
 	board_setup(); // setup board to control LED
 	led_on(); // indicate bootloader started
 #if defined(BUSVOODOO)