diff --git a/timesketch/api/v1/resources/aggregation.py b/timesketch/api/v1/resources/aggregation.py
index 1b25827e34..de3d13064a 100644
--- a/timesketch/api/v1/resources/aggregation.py
+++ b/timesketch/api/v1/resources/aggregation.py
@@ -468,7 +468,7 @@ def post(self, sketch_id):
         sketch_indices = {
             t.searchindex.index_name
             for t in sketch.timelines
-            if t.get_status.status.lower() == "ready"
+            if t.get_status.status.lower() in ["ready", "processing"]
         }
 
         aggregation_dsl = form.aggregation_dsl.data
diff --git a/timesketch/lib/utils.py b/timesketch/lib/utils.py
index 43bb552766..d2cec565ff 100644
--- a/timesketch/lib/utils.py
+++ b/timesketch/lib/utils.py
@@ -540,7 +540,7 @@ def get_validated_indices(indices, sketch):
     """
     sketch_structure = {}
     for timeline in sketch.timelines:
-        if timeline.get_status.status.lower() != "ready":
+        if timeline.get_status.status.lower() not in ["ready", "processing"]:
             continue
         index_ = timeline.searchindex.index_name
         sketch_structure.setdefault(index_, [])
diff --git a/timesketch/models/sketch.py b/timesketch/models/sketch.py
index cda99d7bf0..4f1632308f 100644
--- a/timesketch/models/sketch.py
+++ b/timesketch/models/sketch.py
@@ -144,7 +144,7 @@ def active_timelines(self):
         for timeline in self.timelines:
             timeline_status = timeline.get_status.status
             index_status = timeline.searchindex.get_status.status
-            if (timeline_status or index_status) in ("processing", "fail", "archived"):
+            if (timeline_status or index_status) in ("fail", "archived"):
                 continue
             _timelines.append(timeline)
         return _timelines