diff --git a/boards/px4/fmu-v5x/src/board_config.h b/boards/px4/fmu-v5x/src/board_config.h
index 8aade96e94..836902b553 100644
--- a/boards/px4/fmu-v5x/src/board_config.h
+++ b/boards/px4/fmu-v5x/src/board_config.h
@@ -631,7 +631,7 @@
 
 /* This board provides a DMA pool and APIs */
 
-#define BOARD_DMA_ALLOC_POOL_SIZE 5120
+#define BOARD_DMA_ALLOC_POOL_SIZE 5120+4096
 
 /* This board provides the board_on_reset interface */