diff --git a/python/rcdb/alias.py b/python/rcdb/alias.py
index d83c306..6dbc1d1 100644
--- a/python/rcdb/alias.py
+++ b/python/rcdb/alias.py
@@ -53,7 +53,7 @@ def __init__(self, name, expression, comment):
                                              collimator_diameter != 'Blocking'""",
                          "Is production run with long mode data"),
 
-    ConditionSearchAlias('is_cosmic', "(run_type == 'hd_all.tsg_cosmic' and 'COSMIC' in daq_run and beam_current < 1) or (radiator_type == 'RETRACTED' and collimator_diameter == 'Blocking')",
+    ConditionSearchAlias('is_cosmic', "\"cosmic\" in run_config and beam_current < 1 and event_count > 5000",
                          "Is cosmic run"),
 
     ConditionSearchAlias('is_empty_target', "target_type == 'EMPTY & Ready'", "Target is empty"),