diff --git a/templates/event-generator/prepare_namelist.py b/templates/event-generator/prepare_namelist.py
index 3dbb0d1c56dcde520e69a551b81b4c8e4f0b11ae..f0e8a4bf61cc6f15de7d5a1ef3ee4da0ea2dd218 100644
--- a/templates/event-generator/prepare_namelist.py
+++ b/templates/event-generator/prepare_namelist.py
@@ -19,9 +19,9 @@ ATMOSPHERE_NAMELIST_PATH = Path("%simulation.namelist_paths.atmosphere%")
 MASTER_NAMELIST_PATH = Path("%simulation.namelist_paths.master%")
 
 # Get first-guess and analysis names:
-analysis_filename = (RUNDIR / "igaf*.m*.grb")
-analysis_filename = analysis_filename.parent.glob(analysis_filename.name).__next__()
-analysis_filename = analysis_filename.name
+# analysis_filename = (RUNDIR / "igaf*.m*.grb")
+# analysis_filename = analysis_filename.parent.glob(analysis_filename.name).__next__()
+analysis_filename = "analysis.nc"
 
 first_guess_filename = (RUNDIR / "igfff00030000.m*.grb").resolve()
 first_guess_filename = first_guess_filename.parent.glob(first_guess_filename.name).__next__()
@@ -74,7 +74,8 @@ atmosphere_namelist_replacements = {
     },
 
     "extpar_nml": {
-        "extpar_filename": "%simulation.external_parameters_filename%",
+        # "extpar_filename": "%simulation.external_parameters_filename%",
+        "extpar_filename": "extpar.nc",
     },
 
     "initicon_nml": {