diff --git a/arch/arm64/src/bcm2711/hardware/bcm2711_sdio.h b/arch/arm64/src/bcm2711/hardware/bcm2711_sdio.h
index 802918e40f9bf..2e0c6e97a2055 100644
--- a/arch/arm64/src/bcm2711/hardware/bcm2711_sdio.h
+++ b/arch/arm64/src/bcm2711/hardware/bcm2711_sdio.h
@@ -100,7 +100,7 @@
  * Controller Simplified Specification.
  */
 
-#define BCM_SDIO_BLKSIZECNT_BLKSIZE_MASK (0x3ff)
+#define BCM_SDIO_BLKSIZECNT_BLKSIZE_MASK (0xfff)
 #define BCM_SDIO_BLKSIZECNT_BLKCNT_SHIFTLEN (16)
 #define BCM_SDIO_BLKSIZECNT_BLKCNT_MASK (0xffff)