diff --git a/STM32F1/libraries/STM32ADC/src/utility/util_adc.c b/STM32F1/libraries/STM32ADC/src/utility/util_adc.c
index e64b58e..360b235 100644
--- a/STM32F1/libraries/STM32ADC/src/utility/util_adc.c
+++ b/STM32F1/libraries/STM32ADC/src/utility/util_adc.c
@@ -137,8 +137,8 @@ void adc_dma_enable(adc_dev * dev) {
   bb_peri_set_bit(&dev->regs->CR2, ADC_CR2_DMA_BIT, 1);
 }
 
-uint8 poll_adc_convert(adc_dev *dev) {
-  return bb_peri_get_bit(dev->regs->SR, ADC_SR_EOC_BIT);
+uint8 poll_adc_convert(adc_dev * dev) {
+  return bb_peri_get_bit(&dev->regs->SR, ADC_SR_EOC_BIT);
   }