diff --git a/README.md b/README.md
index 98ca576..5372b31 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ This openembedded layer provides the rust compiler, tools for building packages
 
  Building:
 	 rust-native, cargo-native,
-	 rust-cross (tested with qemux86)
+	 rust-cross (tested with qemux86, SYS=i586-poky-linux)
 
 ## What doesn't: