diff --git a/src/raspa_ase/calculator.py b/src/raspa_ase/calculator.py
index b3b8aec..936b39b 100644
--- a/src/raspa_ase/calculator.py
+++ b/src/raspa_ase/calculator.py
@@ -37,9 +37,8 @@ def __init__(self, binary: Path | str | None = None, **kwargs) -> None:
 
         Parameters
         ----------
-        argv
-            The command line arguments to the RASPA executable.
-            This defaults to doing `${RASPA_DIR}/bin/simulate simulation.input`
+        binary
+            The binary to run RASPA. This defaults to doing `${RASPA_DIR}/bin/simulate`
             and typically does not need to be changed.
 
         Returns