diff --git a/Soil/GHG/Denit_Ceres.for b/Soil/GHG/Denit_Ceres.for
index c8f111a06..56cf7f2fb 100644
--- a/Soil/GHG/Denit_Ceres.for
+++ b/Soil/GHG/Denit_Ceres.for
@@ -65,6 +65,9 @@ C=======================================================================
 
       NDAYS_WET = 0.0
 
+!     CHP added 2023-03-21
+      DLAG = 0.0
+
 !***********************************************************************
 !***********************************************************************
 !     DAILY RATE CALCULATIONS