diff --git a/firmware/config/stm32f4ems/mcuconf.h b/firmware/config/stm32f4ems/mcuconf.h
index 84d2845edc..aee1e97bb6 100644
--- a/firmware/config/stm32f4ems/mcuconf.h
+++ b/firmware/config/stm32f4ems/mcuconf.h
@@ -327,10 +327,10 @@
 #define STM32_UART_USE_USART6               FALSE
 #define STM32_UART_USART1_RX_DMA_STREAM     STM32_DMA_STREAM_ID(2, 5)
 #define STM32_UART_USART1_TX_DMA_STREAM     STM32_DMA_STREAM_ID(2, 7)
-#define STM32_UART_USART2_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 5)
-#define STM32_UART_USART2_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 6)
-#define STM32_UART_USART3_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 1)
-#define STM32_UART_USART3_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 3)
+#define STM32_UART_USART2_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 1)
+#define STM32_UART_USART2_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 3)
+#define STM32_UART_USART3_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 5)
+#define STM32_UART_USART3_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 6)
 #define STM32_UART_UART4_RX_DMA_STREAM      STM32_DMA_STREAM_ID(1, 2)
 #define STM32_UART_UART4_TX_DMA_STREAM      STM32_DMA_STREAM_ID(1, 4)
 #define STM32_UART_UART5_RX_DMA_STREAM      STM32_DMA_STREAM_ID(1, 0)