diff --git a/Inc/stm32f4xx_ll_adc.h b/Inc/stm32f4xx_ll_adc.h
index 49fee97..7416d6c 100644
--- a/Inc/stm32f4xx_ll_adc.h
+++ b/Inc/stm32f4xx_ll_adc.h
@@ -4015,7 +4015,7 @@
   */
 __STATIC_INLINE uint8_t LL_ADC_REG_ReadConversionData8(ADC_TypeDef *ADCx)
 {
-  return (uint16_t)(READ_BIT(ADCx->DR, ADC_DR_DATA));
+  return (uint8_t)(READ_BIT(ADCx->DR, ADC_DR_DATA));
 }
 
 /**
@@ -4030,7 +4030,7 @@
   */
 __STATIC_INLINE uint8_t LL_ADC_REG_ReadConversionData6(ADC_TypeDef *ADCx)
 {
-  return (uint16_t)(READ_BIT(ADCx->DR, ADC_DR_DATA));
+  return (uint8_t)(READ_BIT(ADCx->DR, ADC_DR_DATA));
 }
 
 #if defined(ADC_MULTIMODE_SUPPORT)