diff --git a/src/main/drivers/serial_uart_stm32f10x.c b/src/main/drivers/serial_uart_stm32f10x.c
index 4cf886d07..330b3f837 100644
--- a/src/main/drivers/serial_uart_stm32f10x.c
+++ b/src/main/drivers/serial_uart_stm32f10x.c
@@ -139,7 +139,7 @@ uartPort_t *serialUART1(uint32_t baudRate, portMode_t mode, portOptions_t option
     }
 
     // DMA TX Interrupt
-    dmaSetHandler(DMA1_CH4_HANDLER, uart_tx_dma_IRQHandler, NVIC_PRIO_SERIALUART1_TXDMA, &uartPort1);
+    dmaSetHandler(DMA1_CH4_HANDLER, uart_tx_dma_IRQHandler, NVIC_PRIO_SERIALUART1_TXDMA, (uint32_t)&uartPort1);
 
 #ifndef USE_UART1_RX_DMA
     // RX/TX Interrupt
diff --git a/src/main/drivers/serial_uart_stm32f30x.c b/src/main/drivers/serial_uart_stm32f30x.c
index f586ee527..ee65d54d2 100644
--- a/src/main/drivers/serial_uart_stm32f30x.c
+++ b/src/main/drivers/serial_uart_stm32f30x.c
@@ -171,7 +171,7 @@ uartPort_t *serialUART1(uint32_t baudRate, portMode_t mode, portOptions_t option
 
     serialUARTInit(IOGetByTag(IO_TAG(UART1_TX_PIN)), IOGetByTag(IO_TAG(UART1_RX_PIN)), mode, options, GPIO_AF_7, 1);
 
-    dmaSetHandler(DMA1_CH4_HANDLER, handleUsartTxDma, NVIC_PRIO_SERIALUART1_TXDMA, &uartPort1);
+    dmaSetHandler(DMA1_CH4_HANDLER, handleUsartTxDma, NVIC_PRIO_SERIALUART1_TXDMA, (uint32_t)&uartPort1);
 
 #ifndef USE_UART1_RX_DMA
     NVIC_InitTypeDef NVIC_InitStructure;
@@ -225,7 +225,7 @@ uartPort_t *serialUART2(uint32_t baudRate, portMode_t mode, portOptions_t option
 
 #ifdef USE_UART2_TX_DMA
     // DMA TX Interrupt
-    dmaSetHandler(DMA1_CH7_HANDLER, handleUsartTxDma, NVIC_PRIO_SERIALUART2_TXDMA, &uartPort2);
+    dmaSetHandler(DMA1_CH7_HANDLER, handleUsartTxDma, NVIC_PRIO_SERIALUART2_TXDMA, (uint32_t)&uartPort2);
 #endif
 
 #ifndef USE_UART2_RX_DMA
@@ -280,7 +280,7 @@ uartPort_t *serialUART3(uint32_t baudRate, portMode_t mode, portOptions_t option
 
 #ifdef USE_UART3_TX_DMA
     // DMA TX Interrupt
-    dmaSetHandler(DMA1_CH2_HANDLER, handleUsartTxDma, NVIC_PRIO_SERIALUART3_TXDMA, &uartPort3);
+    dmaSetHandler(DMA1_CH2_HANDLER, handleUsartTxDma, NVIC_PRIO_SERIALUART3_TXDMA, (uint32_t)&uartPort3);
 #endif
 
 #ifndef USE_UART3_RX_DMA