diff --git a/src/main/drivers/serial_uart_stm32f10x.c b/src/main/drivers/serial_uart_stm32f10x.c
index 09dd7520c..678e1b2f6 100644
--- a/src/main/drivers/serial_uart_stm32f10x.c
+++ b/src/main/drivers/serial_uart_stm32f10x.c
@@ -49,7 +49,7 @@ static uartPort_t uartPort3;
 #endif
 
 // Using RX DMA disables the use of receive callbacks
-#define USE_USART1_RX_DMA
+//#define USE_USART1_RX_DMA
 
 #if defined(CC3D) // FIXME move board specific code to target.h files.
 #undef USE_USART1_RX_DMA
diff --git a/src/main/drivers/serial_uart_stm32f30x.c b/src/main/drivers/serial_uart_stm32f30x.c
index c7d62d5f0..fb43261ee 100644
--- a/src/main/drivers/serial_uart_stm32f30x.c
+++ b/src/main/drivers/serial_uart_stm32f30x.c
@@ -38,7 +38,7 @@
 #include "serial_uart_impl.h"
 
 // Using RX DMA disables the use of receive callbacks
-#define USE_USART1_RX_DMA
+//#define USE_USART1_RX_DMA
 //#define USE_USART2_RX_DMA
 //#define USE_USART2_TX_DMA
 //#define USE_USART3_RX_DMA