1 files changed, 6 insertions, 0 deletions
diff --git a/src/libstd/env.rs b/src/libstd/env.rs
index 9fcc3a80b98..63bf051c9bc 100644
--- a/src/libstd/env.rs
+++ b/src/libstd/env.rs
@@ -662,6 +662,7 @@ pub mod consts {
     /// - mips64
     /// - powerpc
     /// - powerpc64
+    /// - s390x
     #[stable(feature = "env", since = "1.0.0")]
     pub const ARCH: &'static str = super::arch::ARCH;
 
@@ -942,6 +943,11 @@ mod arch {
     pub const ARCH: &'static str = "powerpc64";
 }
 
+#[cfg(target_arch = "s390x")]
+mod arch {
+    pub const ARCH: &'static str = "s390x";
+}
+
 #[cfg(target_arch = "le32")]
 mod arch {
     pub const ARCH: &'static str = "le32";