diff --git a/application.c b/application.c
index 47a4398..a421197 100644
--- a/application.c
+++ b/application.c
@@ -613,9 +613,13 @@ void main(void)
 	gpio_set_output_options(GPIO_PORT(SIGNAL_PD_PIN), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(SIGNAL_PD_PIN)); // set output as open-drain
 	gpio_mode_setup(GPIO_PORT(SIGNAL_PD_PIN), GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN(SIGNAL_PD_PIN)); // configure pin as output
 	rcc_periph_clock_enable(GPIO_RCC(SIGNAL_PU_PIN)); // enable clock for port domain
-	gpio_set(GPIO_PORT(SIGNAL_PU_PIN), GPIO_PIN(SIGNAL_PU_PIN)); // ensure we are not enable pMOS
+	gpio_set(GPIO_PORT(SIGNAL_PU_PIN), GPIO_PIN(SIGNAL_PU_PIN)); // ensure we are do enable pMOS to pull up the signal
 	gpio_set_output_options(GPIO_PORT(SIGNAL_PU_PIN), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(SIGNAL_PU_PIN)); // set output as open-drain
 	gpio_mode_setup(GPIO_PORT(SIGNAL_PU_PIN), GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN(SIGNAL_PU_PIN)); // configure pin as output
+	rcc_periph_clock_enable(GPIO_RCC(TARGET_EN)); // enable clock for port domain
+	gpio_set(GPIO_PORT(TARGET_EN), GPIO_PIN(TARGET_EN)); // ensure we do not enable pMOS to power level shifters
+	gpio_set_output_options(GPIO_PORT(TARGET_EN), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_EN)); // set output as open-drain
+	gpio_mode_setup(GPIO_PORT(TARGET_EN), GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN(TARGET_EN)); // configure pin as output
 	puts("OK\n");
 
 	puts("setup analog multiplexer: ");