diff --git a/CHANGES.rst b/CHANGES.rst
index ce06cdd6..ef5a6df0 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -16,6 +16,8 @@
 
 - Add attributes under the ``basic`` schema to ``WfiMosaic.meta``. [#328]
 
+- Add initialization for the flux step meta. [#332]
+
 0.19.0 (2024-02-09)
 ===================
 
diff --git a/src/roman_datamodels/maker_utils/_common_meta.py b/src/roman_datamodels/maker_utils/_common_meta.py
index dcdef74a..db37d907 100644
--- a/src/roman_datamodels/maker_utils/_common_meta.py
+++ b/src/roman_datamodels/maker_utils/_common_meta.py
@@ -357,6 +357,7 @@ def mk_cal_step(**kwargs):
     calstep["dark"] = kwargs.get("dark", "INCOMPLETE")
     calstep["dq_init"] = kwargs.get("dq_init", "INCOMPLETE")
     calstep["flat_field"] = kwargs.get("flat_field", "INCOMPLETE")
+    calstep["flux"] = kwargs.get("flux", "INCOMPLETE")
     calstep["jump"] = kwargs.get("jump", "INCOMPLETE")
     calstep["linearity"] = kwargs.get("linearity", "INCOMPLETE")
     calstep["photom"] = kwargs.get("photom", "INCOMPLETE")