diff --git a/include/libopencm3/stm32/f1/adc.h b/include/libopencm3/stm32/f1/adc.h
index e31181d6..281ae597 100644
--- a/include/libopencm3/stm32/f1/adc.h
+++ b/include/libopencm3/stm32/f1/adc.h
@@ -407,8 +407,8 @@ BEGIN_DECLS
 
 void adc_start_conversion_direct(uint32_t adc);
 void adc_set_dual_mode(uint32_t mode);
-void adc_enable_temperature_sensor(uint32_t adc);
-void adc_disable_temperature_sensor(uint32_t adc);
+void adc_enable_temperature_sensor(void);
+void adc_disable_temperature_sensor(void);
 void adc_enable_external_trigger_regular(uint32_t adc, uint32_t trigger);
 void adc_enable_external_trigger_injected(uint32_t adc, uint32_t trigger);
 void adc_reset_calibration(uint32_t adc);
diff --git a/lib/stm32/f1/adc.c b/lib/stm32/f1/adc.c
index bdb899a3..7a108fc4 100644
--- a/lib/stm32/f1/adc.c
+++ b/lib/stm32/f1/adc.c
@@ -199,13 +199,11 @@ void adc_set_dual_mode(uint32_t mode)
 This enables both the sensor and the reference voltage measurements on channels
 16 and 17.
 
-@param[in] adc Unsigned int32. ADC block register address base @ref
-adc_reg_base.
 */
 
-void adc_enable_temperature_sensor(uint32_t adc)
+void adc_enable_temperature_sensor()
 {
-	ADC_CR2(adc) |= ADC_CR2_TSVREFE;
+	ADC_CR2(ADC1) |= ADC_CR2_TSVREFE;
 }
 
 /*---------------------------------------------------------------------------*/
@@ -213,14 +211,11 @@ void adc_enable_temperature_sensor(uint32_t adc)
 
 Disabling this will reduce power consumption from the sensor and the reference
 voltage measurements.
-
-@param[in] adc Unsigned int32. ADC block register address base @ref
-adc_reg_base.
 */
 
-void adc_disable_temperature_sensor(uint32_t adc)
+void adc_disable_temperature_sensor()
 {
-	ADC_CR2(adc) &= ~ADC_CR2_TSVREFE;
+	ADC_CR2(ADC1) &= ~ADC_CR2_TSVREFE;
 }