diff --git a/parm/aero/jcb-base.yaml.j2 b/parm/aero/jcb-base.yaml.j2
index 5f526424c..620822aad 100644
--- a/parm/aero/jcb-base.yaml.j2
+++ b/parm/aero/jcb-base.yaml.j2
@@ -109,7 +109,7 @@ aero_obsdataout_prefix: diag_
 aero_obsdataout_suffix: "_{{ current_cycle | to_YMDH }}.nc"
 
 # Naming conventions for bias correction files
-aero_obsbiasroot_path: "{{COM_CHEM_ANALYSIS_PREV}}"
+aero_obsbiasroot_path: "{{COMIN_CHEM_ANALYSIS_PREV}}"
 
 aero_obsbiasin_path: "{{DATA}}/obs/"
 aero_obsbiasin_prefix: "{{GPREFIX}}"