diff --git a/src/genome_chunked_array.rs b/src/genome_chunked_array.rs
index 44cd61f..ffd4d5b 100644
--- a/src/genome_chunked_array.rs
+++ b/src/genome_chunked_array.rs
@@ -754,6 +754,6 @@ mod tdd_crossover_semantics {
             &mut output,
         );
         println!("{output:?}");
-        assert_eq!(output, &[0, 3]);
+        assert_eq!(output, &[0, 3, 4]);
     }
 }