diff --git a/sampo/scheduler/genetic/operators.py b/sampo/scheduler/genetic/operators.py
index 8fd3114c..b75d1872 100644
--- a/sampo/scheduler/genetic/operators.py
+++ b/sampo/scheduler/genetic/operators.py
@@ -500,6 +500,8 @@ def mate_parts(part1, part2):
 
             mate_parts(order1[cur_priority_group_start:i], order2[cur_priority_group_start:i])
 
+    mate_parts(order1[cur_priority_group_start:], order2[cur_priority_group_start:])
+
     return toolbox.Individual(child1), toolbox.Individual(child2)
 
 
@@ -608,6 +610,10 @@ def mutate_scheduling_order(ind: Individual, mutpb: float, rand: random.Random,
             cur_priority = priorities[order[i]]
             cur_priority_group_start = i
 
+    mutate_scheduling_order_core(order[cur_priority_group_start:],
+                                 mutpb_for_priority_group,
+                                 rand, parents, children)
+
     return ind