diff --git a/docs/CHANGELOG.rst b/docs/CHANGELOG.rst
index 7333bbf79..7052230b0 100644
--- a/docs/CHANGELOG.rst
+++ b/docs/CHANGELOG.rst
@@ -27,6 +27,7 @@ Changed
 
 Fixed
 -----
+- Add status ``DataStatus.PROCESSING`` to the sort order
 
 
 ===================
diff --git a/resolwe/flow/migrations/0034_remove_data_idx_data_status_priority_and_more.py b/resolwe/flow/migrations/0034_remove_data_idx_data_status_priority_and_more.py
new file mode 100644
index 000000000..d6440fcbb
--- /dev/null
+++ b/resolwe/flow/migrations/0034_remove_data_idx_data_status_priority_and_more.py
@@ -0,0 +1,54 @@
+# Generated by Django 4.2.16 on 2024-12-12 08:01
+
+from django.db import migrations, models
+import resolwe.flow.models.base
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("flow", "0033_data_idx_data_status_priority"),
+    ]
+
+    operations = [
+        migrations.RemoveIndex(
+            model_name="data",
+            name="idx_data_status_priority",
+        ),
+        migrations.AddIndex(
+            model_name="data",
+            index=models.Index(
+                models.Case(
+                    models.When(
+                        status=resolwe.flow.models.base.DataStatus["ERROR"],
+                        then=models.Value(0),
+                    ),
+                    models.When(
+                        status=resolwe.flow.models.base.DataStatus["PROCESSING"],
+                        then=models.Value(1),
+                    ),
+                    models.When(
+                        status=resolwe.flow.models.base.DataStatus["UPLOADING"],
+                        then=models.Value(2),
+                    ),
+                    models.When(
+                        status=resolwe.flow.models.base.DataStatus["PREPARING"],
+                        then=models.Value(3),
+                    ),
+                    models.When(
+                        status=resolwe.flow.models.base.DataStatus["WAITING"],
+                        then=models.Value(4),
+                    ),
+                    models.When(
+                        status=resolwe.flow.models.base.DataStatus["RESOLVING"],
+                        then=models.Value(5),
+                    ),
+                    models.When(
+                        status=resolwe.flow.models.base.DataStatus["DONE"],
+                        then=models.Value(6),
+                    ),
+                ),
+                name="idx_data_status_priority",
+            ),
+        ),
+    ]
diff --git a/resolwe/flow/models/base.py b/resolwe/flow/models/base.py
index ba22bed68..7cfb65599 100644
--- a/resolwe/flow/models/base.py
+++ b/resolwe/flow/models/base.py
@@ -47,6 +47,7 @@ def sort_order(cls):
         """Return a priority for sorting data statuses in a collection."""
         return [
             cls.ERROR,
+            cls.PROCESSING,
             cls.UPLOADING,
             cls.PREPARING,
             cls.WAITING,