diff --git a/arch/arm/src/stm32h7/stm32_adc.c b/arch/arm/src/stm32h7/stm32_adc.c
index 720bfdeae3d..af06b0b83bf 100644
--- a/arch/arm/src/stm32h7/stm32_adc.c
+++ b/arch/arm/src/stm32h7/stm32_adc.c
@@ -1947,6 +1947,7 @@ static int adc_ioctl(struct adc_dev_s *dev, int cmd, unsigned long arg)
     {
       case ANIOC_TRIGGER:
         {
+          priv->current = 0;
           adc_startconv(priv, true);
         }
         break;