diff --git a/neat/read_simulator/utils/options.py b/neat/read_simulator/utils/options.py
index fd05b6de..cf0abe88 100644
--- a/neat/read_simulator/utils/options.py
+++ b/neat/read_simulator/utils/options.py
@@ -266,7 +266,7 @@ def from_cli(output_dir: Path,
 
         # Update items to config or default values
         base_options.__dict__.update(final_args)
-        base_options.set_random_seed()
+        base_options.rng = base_options.set_random_seed()
 
         # Some options checking to clean up the args dict
         base_options.check_options()