diff --git a/app/models/labware_creators/donor_pooling_plate.rb b/app/models/labware_creators/donor_pooling_plate.rb
index 14f0c0f7d..f2db794fb 100644
--- a/app/models/labware_creators/donor_pooling_plate.rb
+++ b/app/models/labware_creators/donor_pooling_plate.rb
@@ -153,7 +153,7 @@ def group_by_study_and_project
     # @param groups [Array<Array<Well>>] Array of well groups to be split.
     # @return [Array<Array<Well>>] Array of subgroups split by donor ID.
     def split_groups_by_donor_ids(groups)
-      groups.flat_map { |group| split_group_by_donor_ids(group) }
+      groups.flat_map { |group| split_single_group_by_donor_ids(group) }
     end
 
     # Splits a single group of wells by donor_ids. Used by the