diff --git a/adcc/backends/psi4.py b/adcc/backends/psi4.py
index e3afa58a..1e74b828 100644
--- a/adcc/backends/psi4.py
+++ b/adcc/backends/psi4.py
@@ -256,6 +256,7 @@ def run_hf(xyz, basis, charge=0, multiplicity=1, conv_tol=1e-11,
         "ccpvdz": "cc-pvdz",
     }
 
+    psi4.core.clean_options()
     mol = psi4.geometry(f"""
         {charge} {multiplicity}
         {xyz}