diff --git a/libc/kernel/uapi/linux/ndctl.h b/libc/kernel/uapi/linux/ndctl.h
index f6b9f7f..7e0d560 100644
--- a/libc/kernel/uapi/linux/ndctl.h
+++ b/libc/kernel/uapi/linux/ndctl.h
@@ -22,33 +22,33 @@
 struct nd_cmd_dimm_flags {
   __u32 status;
   __u32 flags;
-} __packed;
+} __attribute__((__packed__));
 struct nd_cmd_get_config_size {
   __u32 status;
   __u32 config_size;
   __u32 max_xfer;
-} __packed;
+} __attribute__((__packed__));
 struct nd_cmd_get_config_data_hdr {
   __u32 in_offset;
   __u32 in_length;
   __u32 status;
   __u8 out_buf[];
-} __packed;
+} __attribute__((__packed__));
 struct nd_cmd_set_config_hdr {
   __u32 in_offset;
   __u32 in_length;
   __u8 in_buf[];
-} __packed;
+} __attribute__((__packed__));
 struct nd_cmd_vendor_hdr {
   __u32 opcode;
   __u32 in_length;
   __u8 in_buf[];
-} __packed;
+} __attribute__((__packed__));
 struct nd_cmd_vendor_tail {
   __u32 status;
   __u32 out_length;
   __u8 out_buf[];
-} __packed;
+} __attribute__((__packed__));
 struct nd_cmd_ars_cap {
   __u64 address;
   __u64 length;
@@ -57,7 +57,7 @@
   __u32 clear_err_unit;
   __u16 flags;
   __u16 reserved;
-} __packed;
+} __attribute__((__packed__));
 struct nd_cmd_ars_start {
   __u64 address;
   __u64 length;
@@ -66,7 +66,7 @@
   __u8 reserved[5];
   __u32 status;
   __u32 scrub_time;
-} __packed;
+} __attribute__((__packed__));
 struct nd_cmd_ars_status {
   __u32 status;
   __u32 out_length;
@@ -82,15 +82,15 @@
     __u32 reserved;
     __u64 err_address;
     __u64 length;
-  } __packed records[];
-} __packed;
+  } __attribute__((__packed__)) records[];
+} __attribute__((__packed__));
 struct nd_cmd_clear_error {
   __u64 address;
   __u64 length;
   __u32 status;
   __u8 reserved[4];
   __u64 cleared;
-} __packed;
+} __attribute__((__packed__));
 enum {
   ND_CMD_IMPLEMENTED = 0,
   ND_CMD_ARS_CAP = 1,