diff --git a/nwbwidgets/controllers/group_and_sort_controllers.py b/nwbwidgets/controllers/group_and_sort_controllers.py
index ded04393..e1cb25ab 100644
--- a/nwbwidgets/controllers/group_and_sort_controllers.py
+++ b/nwbwidgets/controllers/group_and_sort_controllers.py
@@ -136,8 +136,9 @@ def __init__(
                 "TimeIntervals": "trials",
                 "Units": "units",
                 "PlaneSegmentation": "image_planes",
+                "FibersTable": "traces",
             }
-            desc = dt_desc_map[dynamic_table.neurodata_type] if dynamic_table is not None else "traces"
+            desc = dt_desc_map.get(dynamic_table.neurodata_type, "traces") if dynamic_table is not None else "traces"
             self.range_controller = RangeController(
                 0,
                 self.nitems,