diff --git a/parm/soca/berror/soca_diagb.yaml.j2 b/parm/soca/berror/soca_diagb.yaml.j2
index 3e6b9d2ec..fcfd7442f 100644
--- a/parm/soca/berror/soca_diagb.yaml.j2
+++ b/parm/soca/berror/soca_diagb.yaml.j2
@@ -7,8 +7,8 @@ date: '{{ ATM_WINDOW_MIDDLE }}'
 background:
   date: '{{ ATM_WINDOW_MIDDLE }}'
   basename: ./bkg/
-  ocn_filename: '{{ RUN }}.ocean.t{{ gcyc }}z.inst.f009.nc'
-  ice_filename: '{{ RUN }}.agg_ice.t{{ gcyc }}z.inst.f009.nc'
+  ocn_filename: 'gdas.ocean.t{{ gcyc }}z.inst.f009.nc'
+  ice_filename: 'gdas.agg_ice.t{{ gcyc }}z.inst.f009.nc'
   read_from_file: 1
 
 background error: