diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index 17723dda97a98..7628eee7f5c11 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -284,7 +284,7 @@ s! {
 
     pub struct accept_filter_arg {
         pub af_name: [::c_char; 16],
-        af_arg: [[::c_char; 10]; 24],
+        af_arg: [::c_char; 256 - 16],
     }
 
     pub struct ptrace_io_desc {
diff --git a/src/unix/bsd/netbsdlike/netbsd/mod.rs b/src/unix/bsd/netbsdlike/netbsd/mod.rs
index a0d3283979e19..a0b1c232d69d9 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mod.rs
@@ -520,7 +520,7 @@ s! {
 
     pub struct accept_filter_arg {
         pub af_name: [::c_char; 16],
-        af_arg: [[::c_char; 10]; 24],
+        af_arg: [::c_char; 256 - 16],
     }
 
     pub struct ki_sigset_t {
diff --git a/src/unix/linux_like/android/b64/aarch64/mod.rs b/src/unix/linux_like/android/b64/aarch64/mod.rs
index 1bd4491070716..2ea2d2cfcc0ac 100644
--- a/src/unix/linux_like/android/b64/aarch64/mod.rs
+++ b/src/unix/linux_like/android/b64/aarch64/mod.rs
@@ -72,9 +72,7 @@ s! {
         pub sp: ::c_ulonglong,
         pub pc: ::c_ulonglong,
         pub pstate: ::c_ulonglong,
-        // nested arrays to get the right size/length while being able to
-        // auto-derive traits like Debug
-        __reserved: [[u64; 32]; 16],
+        __reserved: [u64; 512],
     }
 
     pub struct user_fpsimd_struct {
diff --git a/src/unix/linux_like/android/mod.rs b/src/unix/linux_like/android/mod.rs
index df24f67afd180..db83b494a4a48 100644
--- a/src/unix/linux_like/android/mod.rs
+++ b/src/unix/linux_like/android/mod.rs
@@ -608,7 +608,7 @@ s_no_extra_traits! {
     pub struct prop_info {
         __name: [::c_char; 32],
         __serial: ::c_uint,
-        __value: [[::c_char; 4]; 23],
+        __value: [::c_char; 92],
     }
 
     pub union __c_anonymous_ifr_ifru {
diff --git a/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs b/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs
index 263a942068926..82273217aacf1 100644
--- a/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs
+++ b/src/unix/linux_like/linux/gnu/b64/aarch64/mod.rs
@@ -212,9 +212,7 @@ s! {
         pub sp: ::c_ulonglong,
         pub pc: ::c_ulonglong,
         pub pstate: ::c_ulonglong,
-        // nested arrays to get the right size/length while being able to
-        // auto-derive traits like Debug
-        __reserved: [[u64; 32]; 16],
+        __reserved: [u64; 512],
     }
 
     pub struct user_fpsimd_struct {
diff --git a/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs b/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs
index 2fd68d95187bf..6528fa2d84e3e 100644
--- a/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs
+++ b/src/unix/linux_like/linux/musl/b64/aarch64/mod.rs
@@ -84,7 +84,7 @@ s! {
         pub sp: ::c_ulong,
         pub pc: ::c_ulong,
         pub pstate: ::c_ulong,
-        __reserved: [[u64; 32]; 16],
+        __reserved: [u64; 512],
     }
 
     #[repr(align(8))]