diff --git a/src/librustc_target/spec/x86_64_unknown_illumos.rs b/src/librustc_target/spec/x86_64_unknown_illumos.rs
index 8d461f67397f2..2567ca47ef967 100644
--- a/src/librustc_target/spec/x86_64_unknown_illumos.rs
+++ b/src/librustc_target/spec/x86_64_unknown_illumos.rs
@@ -13,7 +13,8 @@ pub fn target() -> TargetResult {
         target_endian: "little".to_string(),
         target_pointer_width: "64".to_string(),
         target_c_int_width: "32".to_string(),
-        data_layout: "e-m:e-i64:64-f80:128-n8:16:32:64-S128".to_string(),
+        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+            .to_string(),
         arch: "x86_64".to_string(),
         target_os: "illumos".to_string(),
         target_env: String::new(),