diff --git a/InvenTree/order/models.py b/InvenTree/order/models.py
index 8c21c311f1..b2cca685d9 100644
--- a/InvenTree/order/models.py
+++ b/InvenTree/order/models.py
@@ -812,7 +812,7 @@ class PurchaseOrderLineItem(OrderLineItem):
     def get_destination(self):
         """
         Show where the line item is or should be placed
-        
+
         NOTE: If a line item gets split when recieved, only an arbitrary
               stock items location will be reported as the location for the
               entire line.
@@ -993,7 +993,7 @@ class SalesOrderShipment(models.Model):
         if self.shipment_date:
             # Shipment has already been sent!
             raise ValidationError(_("Shipment has already been sent"))
- 
+
         if self.allocations.count() == 0:
             raise ValidationError(_("Shipment has no allocated stock items"))
 
@@ -1014,11 +1014,10 @@ class SalesOrderShipment(models.Model):
 
         # Iterate through each stock item assigned to this shipment
         for allocation in allocations:
-            
             # Mark the allocation as "complete"
             allocation.complete_allocation(user)
 
-        # Update the "shipment" date 
+        # Update the "shipment" date
         self.shipment_date = datetime.now()
         self.shipped_by = user
 
diff --git a/InvenTree/order/serializers.py b/InvenTree/order/serializers.py
index 3b33d4a16f..b336042684 100644
--- a/InvenTree/order/serializers.py
+++ b/InvenTree/order/serializers.py
@@ -11,6 +11,7 @@ from django.core.exceptions import ValidationError as DjangoValidationError
 from django.db import models, transaction
 from django.db.models import Case, When, Value
 from django.db.models import BooleanField, ExpressionWrapper, F
+from InvenTree.InvenTree.status_codes import SalesOrderStatus
 
 from rest_framework import serializers
 from rest_framework.serializers import ValidationError
@@ -653,7 +654,7 @@ class SalesOrderShipmentCompleteSerializer(serializers.ModelSerializer):
             return
 
         data = self.validated_data
-        
+
         request = self.context['request']
         user = request.user
 
@@ -748,7 +749,9 @@ class SalesOrderCompleteSerializer(serializers.Serializer):
         order = self.context['order']
         data = self.validated_data
 
-        
+        # Mark this order as complete!
+        order.status = SalesOrderStatus.SHIPPED
+        order.save()
 
 
 class SOShipmentAllocationSerializer(serializers.Serializer):
@@ -816,7 +819,6 @@ class SOShipmentAllocationSerializer(serializers.Serializer):
 
         with transaction.atomic():
             for entry in items:
-                
                 # Create a new SalesOrderAllocation
                 order.models.SalesOrderAllocation.objects.create(
                     line=entry.get('line_item'),
diff --git a/InvenTree/order/test_migrations.py b/InvenTree/order/test_migrations.py
index d62449613e..d8f3a655ca 100644
--- a/InvenTree/order/test_migrations.py
+++ b/InvenTree/order/test_migrations.py
@@ -111,7 +111,7 @@ class TestShipmentMigration(MigratorTestCase):
         # The "shipment" model does not exist yet
         with self.assertRaises(LookupError):
             self.old_state.apps.get_model('order', 'salesordershipment')
-    
+
     def test_shipment_creation(self):
         """
         Check that a SalesOrderShipment has been created
diff --git a/InvenTree/order/test_sales_order.py b/InvenTree/order/test_sales_order.py
index 76f9275dac..40fab98349 100644
--- a/InvenTree/order/test_sales_order.py
+++ b/InvenTree/order/test_sales_order.py
@@ -10,7 +10,7 @@ from company.models import Company
 
 from InvenTree import status_codes as status
 
-from order.models import SalesOrder, SalesOrderLineItem, SalesOrderShipment, SalesOrderAllocation
+from order.models import SalesOrder, SalesOrderLineItem, SalesOrderAllocation
 
 from part.models import Part