diff --git a/lib/busvoodoo_i2c.c b/lib/busvoodoo_i2c.c
index f95bf96..26aee15 100644
--- a/lib/busvoodoo_i2c.c
+++ b/lib/busvoodoo_i2c.c
@@ -112,15 +112,15 @@ static bool busvoodoo_i2c_setup(char** prefix, const char* line)
 				uint8_t drive = atoi(line); // parse setting
 				if (1==drive || 2==drive) { // check setting
 					busvoodoo_i2c_embedded_pullup = (1==drive); // remember setting
-					if (!busvoodoo_i2c_embedded_pullup) {
-						printf("use LV to set voltage\n");
-					}
 					busvoodoo_i2c_setting = BUSVOODOO_I2C_SETTING_DONE; // go to next setting
 				}
 			}
 			if (BUSVOODOO_I2C_SETTING_DONE==busvoodoo_i2c_setting) { // we have all settings, configure I2C
 				i2c_master_setup(BUSVOODOO_I2C, false); // setup I2C
-				busvoodoo_embedded_pullup(busvoodoo_i2c_embedded_pullup); // set pull-up
+				if (busvoodoo_i2c_embedded_pullup) {
+					busvoodoo_embedded_pullup(true); // set pull-up
+					printf("use LV to set voltage\n");
+				}
 				led_off(); // disable LED because there is no activity
 				busvoodoo_i2c_setting = BUSVOODOO_I2C_SETTING_NONE; // restart settings next time
 				*prefix = "I2C"; // display mode
diff --git a/lib/busvoodoo_spi.c b/lib/busvoodoo_spi.c
index 23c9a58..bd19ab6 100644
--- a/lib/busvoodoo_spi.c
+++ b/lib/busvoodoo_spi.c
@@ -183,13 +183,10 @@ static bool busvoodoo_spi_setup(char** prefix, const char* line)
 				if (1==drive || 2==drive || 3==drive) { // check setting
 					busvoodoo_spi_drive = (1==drive); // remember setting
 					busvoodoo_spi_pullup = (2==drive); // remember setting
-					if (!busvoodoo_spi_drive && busvoodoo_spi_pullup) {
-						printf("use LV to set voltage\n");
-					}
 					busvoodoo_spi_setting = BUSVOODOO_SPI_SETTING_DONE; // go to next setting
 				}
 			}
-			if (BUSVOODOO_SPI_SETTING_DONE==busvoodoo_spi_setting) { // we have all settings, configure UART
+			if (BUSVOODOO_SPI_SETTING_DONE==busvoodoo_spi_setting) { // we have all settings, configure SPI
 				rcc_periph_clock_enable(RCC_AFIO); // enable clock for SPI alternate function
 				rcc_periph_clock_enable(RCC_SPI(BUSVOODOO_SPI_ID)); // enable clock for SPI peripheral
 				spi_reset(SPI(BUSVOODOO_SPI_ID)); // clear SPI values to default
@@ -239,8 +236,9 @@ static bool busvoodoo_spi_setup(char** prefix, const char* line)
 				}
 				spi_set_master_mode(SPI(BUSVOODOO_SPI_ID)); // set master mode
 				spi_enable(SPI(BUSVOODOO_SPI_ID)); // enable SPI
-				if (!busvoodoo_spi_drive) { // in open drain mode
-					busvoodoo_embedded_pullup(busvoodoo_spi_pullup); // set embedded pull-ups
+				if (!busvoodoo_spi_drive && busvoodoo_spi_pullup) {
+					busvoodoo_embedded_pullup(true); // set embedded pull-ups
+					printf("use LV to set voltage\n");
 				}
 				led_off(); // disable LED because there is no activity
 				busvoodoo_spi_setting = BUSVOODOO_SPI_SETTING_NONE; // restart settings next time