diff --git a/platform/drivers/ADC/ADC1_MDx.c b/platform/drivers/ADC/ADC1_MDx.c
index 95bf5050..050c1c44 100644
--- a/platform/drivers/ADC/ADC1_MDx.c
+++ b/platform/drivers/ADC/ADC1_MDx.c
@@ -100,10 +100,11 @@ void adc1_init()
     DMA2_Stream0->PAR = ((uint32_t) &(ADC1->DR));
     DMA2_Stream0->M0AR = ((uint32_t) &sampleRingBuf);
     DMA2_Stream0->NDTR = 16;
-    DMA2_Stream0->CR = DMA_SxCR_MSIZE_0
-                     | DMA_SxCR_PSIZE_0
-                     | DMA_SxCR_MINC
-                     | DMA_SxCR_CIRC
+    DMA2_Stream0->CR = DMA_SxCR_MSIZE_0     /* Memory size: 16 bit     */
+                     | DMA_SxCR_PSIZE_0     /* Peripheral size: 16 bit */
+                     | DMA_SxCR_PL_0        /* Medium priority         */
+                     | DMA_SxCR_MINC        /* Increment memory        */
+                     | DMA_SxCR_CIRC        /* Circular mode           */
                      | DMA_SxCR_EN;
 
     /* Finally, start conversion */
diff --git a/platform/drivers/display/HX83XX_MDx.c b/platform/drivers/display/HX83XX_MDx.c
index a599fa19..28b60454 100644
--- a/platform/drivers/display/HX83XX_MDx.c
+++ b/platform/drivers/display/HX83XX_MDx.c
@@ -388,7 +388,6 @@ void display_renderRows(uint8_t startRow, uint8_t endRow)
                                                      * sizeof(uint16_t)));
     DMA2_Stream7->M0AR = LCD_FSMC_ADDR_DATA;
     DMA2_Stream7->CR = DMA_SxCR_CHSEL         /* Channel 7                   */
-                     | DMA_SxCR_PL_0          /* Medium priority             */
                      | DMA_SxCR_PINC          /* Increment source pointer    */
                      | DMA_SxCR_DIR_1         /* Memory to memory            */
                      | DMA_SxCR_TCIE          /* Transfer complete interrupt */