diff --git a/kwave/options/simulation_options.py b/kwave/options/simulation_options.py
index 78a49f10..78a30e46 100644
--- a/kwave/options/simulation_options.py
+++ b/kwave/options/simulation_options.py
@@ -305,7 +305,7 @@ def option_factory(kgrid: "kWaveGrid", options: SimulationOptions):
             elif kgrid.dim == 2:
                 options.pml_x_alpha = val[0]
                 options.pml_y_alpha = val[-1]
-            elif kgrid.dim == 2:
+            elif kgrid.dim == 3:
                 options.pml_x_alpha = val[0]
                 options.pml_y_alpha = val[len(val) // 2]
                 options.pml_z_alpha = val[-1]