diff --git a/include/libopencm3/stm32/f0/adc.h b/include/libopencm3/stm32/f0/adc.h
index 573da943..bc88a578 100644
--- a/include/libopencm3/stm32/f0/adc.h
+++ b/include/libopencm3/stm32/f0/adc.h
@@ -190,8 +190,8 @@ void adc_calibrate_wait_finish(uint32_t adc)
 void adc_enable_analog_watchdog_on_all_channels(uint32_t adc);
 void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc, uint8_t chan);
 void adc_disable_analog_watchdog(uint32_t adc);
-void adc_set_watchdog_high_threshold(uint32_t adc, uint8_t threshold);
-void adc_set_watchdog_low_threshold(uint32_t adc, uint8_t threshold);
+void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold);
+void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold);
 
 END_DECLS
 
diff --git a/lib/stm32/f0/adc.c b/lib/stm32/f0/adc.c
index 663099dd..c6f40092 100644
--- a/lib/stm32/f0/adc.c
+++ b/lib/stm32/f0/adc.c
@@ -516,10 +516,10 @@ void adc_disable_analog_watchdog(uint32_t adc)
 /** @brief ADC Set Analog Watchdog Upper Threshold
  *
  * @param[in] adc Unsigned int32. ADC base address (@ref adc_reg_base)
- * @param[in] threshold Unsigned int8. Upper threshold value
+ * @param[in] threshold. Upper threshold value
  */
 
-void adc_set_watchdog_high_threshold(uint32_t adc, uint8_t threshold)
+void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold)
 {
 	ADC_TR1(adc) = (ADC_TR1(adc) & ~ADC_TR1_HT) | ADC_TR1_HT_VAL(threshold);
 }
@@ -528,10 +528,10 @@ void adc_set_watchdog_high_threshold(uint32_t adc, uint8_t threshold)
 /** @brief ADC Set Analog Watchdog Lower Threshold
  *
  * @param[in] adc Unsigned int32. ADC base address (@ref adc_reg_base)
- * @param[in] threshold Unsigned int8. Lower threshold value
+ * @param[in] threshold. Lower threshold value
  */
 
-void adc_set_watchdog_low_threshold(uint32_t adc, uint8_t threshold)
+void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold)
 {
 	ADC_TR1(adc) = (ADC_TR1(adc) & ~ADC_TR1_LT) | ADC_TR1_LT_VAL(threshold);
 }