diff --git a/tests/correctness.rs b/tests/correctness.rs
index 2f2abf7..a7c7599 100644
--- a/tests/correctness.rs
+++ b/tests/correctness.rs
@@ -51,9 +51,9 @@ fn test_zeros() {
     let training_data: Vec<u8> = vec![0, 1, 2, 3, 4, 0];
     let trained = fsst_rs::train(&training_data);
     println!("compressing with zeros");
-    let compressed = trained.compress(&[0, 4]);
+    let compressed = trained.compress(&[4, 0]);
     println!("decomperssing with zeros");
-    assert_eq!(trained.decompress(&compressed), &[0, 4]);
+    assert_eq!(trained.decompress(&compressed), &[4, 0]);
     println!("done");
 }