diff --git a/lib/stm32/common/adc_common_v1.c b/lib/stm32/common/adc_common_v1.c
index be5e1af1..45d9e2b4 100644
--- a/lib/stm32/common/adc_common_v1.c
+++ b/lib/stm32/common/adc_common_v1.c
@@ -113,8 +113,7 @@ void adc_power_off(uint32_t adc)
 /** @brief ADC Enable Analog Watchdog for Regular Conversions
 
 The analog watchdog allows the monitoring of an analog signal between two
-threshold levels. The thresholds must be preset. Comparison is done before data
-alignment takes place, so the thresholds are left-aligned.
+threshold levels. The thresholds must be preset.
 
 @param[in] adc Unsigned int32. ADC block register address base @ref
 adc_reg_base.
@@ -529,7 +528,7 @@ void adc_set_single_conversion_mode(uint32_t adc)
 /** @brief ADC Set Analog Watchdog Upper Threshold
 
 @param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
-@param[in] threshold Unsigned int8. Upper threshold value
+@param[in] threshold Upper threshold value, 12bit right aligned.
 */
 
 void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold)
@@ -545,7 +544,7 @@ void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold)
 /** @brief ADC Set Analog Watchdog Lower Threshold
 
 @param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
-@param[in] threshold Unsigned int8. Lower threshold value
+@param[in] threshold Lower threshold value, 12bit right aligned.
 */
 
 void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold)