diff --git a/libc/kernel/uapi/linux/idxd.h b/libc/kernel/uapi/linux/idxd.h
index 8724149..4f1282e 100644
--- a/libc/kernel/uapi/linux/idxd.h
+++ b/libc/kernel/uapi/linux/idxd.h
@@ -231,8 +231,8 @@
       uint32_t invalid_flags : 24;
       uint32_t rsvd2 : 8;
     };
-    uint16_t delta_rec_size;
-    uint16_t crc_val;
+    uint32_t delta_rec_size;
+    uint32_t crc_val;
     struct {
       uint32_t dif_chk_ref_tag;
       uint16_t dif_chk_app_tag_mask;