diff --git a/src/rstd/atomic/au64.rs b/src/rstd/atomic/au64.rs
index 1cf435b..b66d506 100644
--- a/src/rstd/atomic/au64.rs
+++ b/src/rstd/atomic/au64.rs
@@ -65,4 +65,12 @@ mod tests {
     fn can_parse_zero() {
         assert_eq!(u64::parse_slice(&[0, 0, 0, 0, 0, 0, 0, 0]).unwrap(), 0);
     }
+
+    #[test]
+    fn can_parse_le() {
+        assert_eq!(
+            u64::parse_slice(&[1, 2, 3, 4, 5, 6, 7, 8]).unwrap(),
+            0x0807060504030201,
+        );
+    }
 }