diff --git a/quartical/gains/parameterized_gain.py b/quartical/gains/parameterized_gain.py
index ab68361c..cbd5f4a3 100644
--- a/quartical/gains/parameterized_gain.py
+++ b/quartical/gains/parameterized_gain.py
@@ -14,7 +14,8 @@
         "WEIGHT",
         "FLAG",
         "ROW_MAP",
-        "ROW_WEIGHTS"
+        "ROW_WEIGHTS",
+        "TIME"
     )
 )