diff --git a/src/libos/src/misc/uname.rs b/src/libos/src/misc/uname.rs
index a6cd01ba..7fc70ec7 100644
--- a/src/libos/src/misc/uname.rs
+++ b/src/libos/src/misc/uname.rs
@@ -37,7 +37,7 @@ lazy_static! {
     static ref NODENAME: RwLock<CString> = RwLock::new(CString::new("occlum-node").unwrap());
     static ref RELEASE: CString = CString::new("0.1").unwrap();
     static ref VERSION: CString = CString::new("0.1").unwrap();
-    static ref MACHINE: CString = CString::new("x86-64").unwrap();
+    static ref MACHINE: CString = CString::new("x86_64").unwrap();
     static ref DOMAINNAME: CString = CString::new("").unwrap();
 }