diff --git a/boards/px4/fmu-v5x/nuttx-config/include/board.h b/boards/px4/fmu-v5x/nuttx-config/include/board.h
index 60c0647f31..21c382b7ba 100644
--- a/boards/px4/fmu-v5x/nuttx-config/include/board.h
+++ b/boards/px4/fmu-v5x/nuttx-config/include/board.h
@@ -253,7 +253,7 @@
  *   DMAMAP_SDMMC2_2 = Channel 11, Stream 5 <- Free for other devices
  */
 
-#define DMAMAP_SDMMC2  DMAMAP_SDMMC1_1
+#define DMAMAP_SDMMC2  DMAMAP_SDMMC2_1
 
 
 /* FLASH wait states