diff --git a/src/main/drivers/serial_uart_stm32f30x.c b/src/main/drivers/serial_uart_stm32f30x.c
index 10d8cdd9e..6565e27fb 100644
--- a/src/main/drivers/serial_uart_stm32f30x.c
+++ b/src/main/drivers/serial_uart_stm32f30x.c
@@ -349,7 +349,7 @@ void DMA1_Channel7_IRQHandler(void)
 #endif
 
 // USART3 Tx DMA Handler
-#ifdef USE_USART2_TX_DMA
+#ifdef USE_USART3_TX_DMA
 void DMA1_Channel2_IRQHandler(void)
 {
     uartPort_t *s = &uartPort3;