diff --git a/src/drivers/drv_gpio.h b/src/drivers/drv_gpio.h
index 1fec875f15..e33aae9f83 100644
--- a/src/drivers/drv_gpio.h
+++ b/src/drivers/drv_gpio.h
@@ -68,9 +68,6 @@
 /** configure the board GPIOs in (arg) as outputs */
 #define GPIO_SET_OUTPUT	GPIOC(1)
 
-/** configure the board GPIOs in (arg) as inputs */
-#define GPIO_SET_INPUT	GPIOC(2)
-
 /** set the GPIOs in (arg) */
 #define GPIO_SET	GPIOC(10)
 
diff --git a/src/drivers/px4fmu/fmu.cpp b/src/drivers/px4fmu/fmu.cpp
index 28e875bc87..baffe71d95 100644
--- a/src/drivers/px4fmu/fmu.cpp
+++ b/src/drivers/px4fmu/fmu.cpp
@@ -2671,13 +2671,6 @@ PX4FMU::gpio_set_function(uint32_t gpios, int function)
 	for (unsigned i = 0; i < _ngpio; i++) {
 		if (gpios & (1 << i)) {
 			switch (function) {
-			case GPIO_SET_INPUT:
-				if (_gpio_tab[i].input) {
-					px4_arch_configgpio(_gpio_tab[i].input);
-				}
-
-				break;
-
 			case GPIO_SET_OUTPUT:
 				if (_gpio_tab[i].output) {
 					px4_arch_configgpio(_gpio_tab[i].output);
@@ -2881,7 +2874,6 @@ PX4FMU::gpio_ioctl(struct file *filp, int cmd, unsigned long arg)
 		break;
 
 	case GPIO_SET_OUTPUT:
-	case GPIO_SET_INPUT:
 		ret = gpio_set_function(arg, cmd);
 		break;