diff --git a/rustup-init.sh b/rustup-init.sh
index 2eebc496b7..801da0b1ec 100755
--- a/rustup-init.sh
+++ b/rustup-init.sh
@@ -280,6 +280,10 @@ get_architecture() {
             _cputype=powerpc64le
             ;;
 
+        s390x)
+            _cputype=s390x
+            ;;
+
         *)
             err "unknown CPU type: $_cputype"