diff --git a/libc-test/semver/linux-s390x.txt b/libc-test/semver/linux-s390x.txt
index f2a16a6d8fe6..e5a4c347b5e5 100644
--- a/libc-test/semver/linux-s390x.txt
+++ b/libc-test/semver/linux-s390x.txt
@@ -104,4 +104,5 @@ flock64
 fpreg_t
 fpregset_t
 greg_t
+max_align_t
 termios2
diff --git a/src/unix/linux_like/linux/gnu/b64/s390x.rs b/src/unix/linux_like/linux/gnu/b64/s390x.rs
index 06b99f210475..d6b802bd22ff 100644
--- a/src/unix/linux_like/linux/gnu/b64/s390x.rs
+++ b/src/unix/linux_like/linux/gnu/b64/s390x.rs
@@ -237,6 +237,13 @@ cfg_if! {
     }
 }
 
+s_no_extra_traits! {
+    #[repr(align(8))]
+    pub struct max_align_t {
+        priv_: [i64; 3],
+    }
+}
+
 pub const POSIX_FADV_DONTNEED: c_int = 6;
 pub const POSIX_FADV_NOREUSE: c_int = 7;