diff --git a/kiss/src/kiss/Prelude.hx b/kiss/src/kiss/Prelude.hx
index 0d188753..699bb8f8 100644
--- a/kiss/src/kiss/Prelude.hx
+++ b/kiss/src/kiss/Prelude.hx
@@ -169,7 +169,7 @@ class Prelude {
         return sorted;
     }
 
-    public static function groups<T>(a:Array<T>, size, extraHandling = Drop):kiss.List<kiss.List<T>> {
+    public static function groups<T>(a:Array<T>, size, extraHandling = Throw):kiss.List<kiss.List<T>> {
         var numFullGroups = Math.floor(a.length / size);
         var fullGroups = [
             for (num in 0...numFullGroups) {