diff --git a/targets/TARGET_STM/TARGET_STM32F2/analogout_device.c b/targets/TARGET_STM/TARGET_STM32F2/analogout_device.c
index 6323fd73d3..3976d5b084 100644
--- a/targets/TARGET_STM/TARGET_STM32F2/analogout_device.c
+++ b/targets/TARGET_STM/TARGET_STM32F2/analogout_device.c
@@ -88,7 +88,8 @@ void analogout_init(dac_t *obj, PinName pin)
     analogout_write_u16(obj, 0);
 }
 
-void analogout_free(dac_t *obj) {
+void analogout_free(dac_t *obj)
+{
     // Reset DAC and disable clock
     __HAL_RCC_DAC_FORCE_RESET();
     __HAL_RCC_DAC_RELEASE_RESET();