diff --git a/src/drivers/px4fmu/fmu.cpp b/src/drivers/px4fmu/fmu.cpp
index 19cb4cafce..190a698fb1 100644
--- a/src/drivers/px4fmu/fmu.cpp
+++ b/src/drivers/px4fmu/fmu.cpp
@@ -2044,7 +2044,7 @@ fmu_main(int argc, char *argv[])
 #if defined(CONFIG_ARCH_BOARD_PX4FMU_V1)
 	fprintf(stderr, "  mode_gpio, mode_serial, mode_pwm, mode_gpio_serial, mode_pwm_serial, mode_pwm_gpio, test, fake, sensor_reset, id\n");
 #elif defined(CONFIG_ARCH_BOARD_PX4FMU_V2) || defined(CONFIG_ARCH_BOARD_AEROCORE)
-	fprintf(stderr, "  mode_gpio, mode_pwm, test, sensor_reset [milliseconds], i2c <bus> <hz>\n");
+	fprintf(stderr, "  mode_gpio, mode_pwm, mode_pwm4, test, sensor_reset [milliseconds], i2c <bus> <hz>\n");
 #endif
 	exit(1);
 }