diff --git a/src/main/java/de/wiesler/Sorter.java b/src/main/java/de/wiesler/Sorter.java
index 04276f9..c5abd6c 100644
--- a/src/main/java/de/wiesler/Sorter.java
+++ b/src/main/java/de/wiesler/Sorter.java
@@ -565,7 +565,7 @@ private static void sample_sort(int[] values, int begin, int end, Storage storag
       @ assignable values[begin..end - 1];
       @*/
     public static void fallback_sort(int[] values, int begin, int end) {
-        // insertion_sort(values, begin, end);
+        insertion_sort(values, begin, end);
     }
 
     public static void insertion_sort(int[] values, int begin, int end) {