diff --git a/src/unix/linux_like/linux/gnu/mod.rs b/src/unix/linux_like/linux/gnu/mod.rs
index 06c6fe6714d35..736272ea70791 100644
--- a/src/unix/linux_like/linux/gnu/mod.rs
+++ b/src/unix/linux_like/linux/gnu/mod.rs
@@ -338,6 +338,7 @@ s! {
 
     // linux x32 compatibility
     // See https://sourceware.org/bugzilla/show_bug.cgi?id=16437
+    #[non_exhaustive]
     pub struct timespec {
         pub tv_sec: time_t,
         #[cfg(all(gnu_time_bits64, target_endian = "big"))]
diff --git a/src/unix/mod.rs b/src/unix/mod.rs
index c9415554b2c1b..8093a04cb91ba 100644
--- a/src/unix/mod.rs
+++ b/src/unix/mod.rs
@@ -68,6 +68,7 @@ s! {
 
     // linux x32 compatibility
     // See https://sourceware.org/bugzilla/show_bug.cgi?id=16437
+    #[non_exhaustive]
     #[cfg(not(target_env = "gnu"))]
     pub struct timespec {
         pub tv_sec: time_t,