diff --git a/board/stm32h7/lladc.h b/board/stm32h7/lladc.h
index 29d5e19d6..0a52b78d3 100644
--- a/board/stm32h7/lladc.h
+++ b/board/stm32h7/lladc.h
@@ -18,12 +18,12 @@ void adc_init(void) {
 }
 
 uint16_t adc_get_raw(uint8_t channel) {
-
   ADC1->SQR1 &= ~(ADC_SQR1_L);
   ADC1->SQR1 = ((uint32_t) channel << 6U);
 
-  ADC1->SMPR1 = (0x7U << (channel * 3U) );
+  ADC1->SMPR1 = (0x2U << (channel * 3U));
   ADC1->PCSEL_RES0 = (0x1U << channel);
+  ADC1->CFGR2 = (127U << ADC_CFGR2_OVSR_Pos) | (0x7U << ADC_CFGR2_OVSS_Pos) | ADC_CFGR2_ROVSE;
 
   ADC1->CR |= ADC_CR_ADSTART;
   while (!(ADC1->ISR & ADC_ISR_EOC));