diff --git a/kwave/kWaveSimulation.py b/kwave/kWaveSimulation.py
index 8cd31e03..fc943540 100644
--- a/kwave/kWaveSimulation.py
+++ b/kwave/kWaveSimulation.py
@@ -154,7 +154,7 @@ def equation_of_state(self):
             else:
                 return "absorbing"
         else:
-            return "loseless"
+            return "lossless"
 
     @property
     def use_sensor(self):
diff --git a/kwave/kWaveSimulation_helper/create_absorption_variables.py b/kwave/kWaveSimulation_helper/create_absorption_variables.py
index 56ae2d38..9434f827 100644
--- a/kwave/kWaveSimulation_helper/create_absorption_variables.py
+++ b/kwave/kWaveSimulation_helper/create_absorption_variables.py
@@ -14,6 +14,8 @@ def create_absorption_variables(kgrid: kWaveGrid, medium: kWaveMedium, equation_
         return create_absorbing_medium_variables(kgrid.k, medium)
     elif equation_of_state == "stokes":
         return create_stokes_medium_variables(medium)
+    elif equation_of_state == "lossless":
+        return None, None, None, None
     else:
         raise NotImplementedError