diff --git a/os/hal/ports/STM32/LLD/ADCv2/hal_adc_lld.c b/os/hal/ports/STM32/LLD/ADCv2/hal_adc_lld.c
index 7c4695522..93534b2e3 100644
--- a/os/hal/ports/STM32/LLD/ADCv2/hal_adc_lld.c
+++ b/os/hal/ports/STM32/LLD/ADCv2/hal_adc_lld.c
@@ -384,7 +384,8 @@ void adc_lld_stop_conversion(ADCDriver *adcp) {
 
   dmaStreamDisable(adcp->dmastp);
   adcp->adc->CR1 = 0;
-  adcp->adc->CR2 = 0;
+  /* Because ticket #822, preserving injected conversions.*/
+  adcp->adc->CR2 &= ~(ADC_CR2_SWSTART);
   adcp->adc->CR2 = ADC_CR2_ADON;
 }
 
diff --git a/readme.txt b/readme.txt
index 7e8bef6a8..fa5e5b1fb 100644
--- a/readme.txt
+++ b/readme.txt
@@ -275,3 +275,4 @@
        to 17.6.1).
 - VAR: Fixed CMSIS_OS issue in timers (bug #846)(backported to 17.6.1
        and 16.1.9).
+- HAL: Fixed injected ADC with regular conversion (bug #822).