diff --git a/parm/config/gfs/config.aeroanlgenb b/parm/config/gfs/config.aeroanlgenb
index c6d07b1dd3..6a2139ad01 100644
--- a/parm/config/gfs/config.aeroanlgenb
+++ b/parm/config/gfs/config.aeroanlgenb
@@ -9,7 +9,7 @@ echo "BEGIN: config.aeroanlgenb"
 source "${EXPDIR}/config.resources" aeroanlgenb
 
 export BMATYAML="${PARMgfs}/gdas/aero/berror/aero_diagb.yaml.j2"
-export DIFFFFYAML="${PARMgfs}/gdas/aero/berror/aero_diffusionparm.yaml.j2"
+export DIFFUSIONYAML="${PARMgfs}/gdas/aero/berror/aero_diffusionparm.yaml.j2"
 export iterations=10
 export fixed value=1.0