diff --git a/validation/tools/compare_raptor_pimcomp.py b/validation/tools/compare_raptor_pimcomp.py
index 03df846..19d5c0d 100644
--- a/validation/tools/compare_raptor_pimcomp.py
+++ b/validation/tools/compare_raptor_pimcomp.py
@@ -817,7 +817,6 @@ def run_pimsim_nn(
     label: str,
     inst_path: Path,
     config_path: Path,
-    single_file: bool,
     steps: list[StepRecord],
     args: argparse.Namespace,
 ) -> dict[str, Any]:
@@ -825,7 +824,7 @@ def run_pimsim_nn(
         str(args.pimsim_nn_build_dir / "ChipTest"),
         str(inst_path),
         str(config_path),
-        "true" if single_file else "false",
+        "--gui=false",
     ]
     output = run_logged(
         label,
@@ -1478,7 +1477,6 @@ def main():
                 "pimsim-nn Raptor",
                 raptor_pim_dir,
                 pimsim_config,
-                False,
                 steps,
                 args,
             )
@@ -1502,7 +1500,6 @@ def main():
                     "pimsim-nn PIMCOMP",
                     pimcomp_pimsim_dir,
                     pimsim_config,
-                    False,
                     steps,
                     args,
                 )