diff --git a/hnn_core/gui/_viz_manager.py b/hnn_core/gui/_viz_manager.py
index afdd60e85..63b04d3d6 100644
--- a/hnn_core/gui/_viz_manager.py
+++ b/hnn_core/gui/_viz_manager.py
@@ -1034,6 +1034,4 @@ def _simulate_edit_figure(self, fig_name, ax_name, simulation_name,
 
 def _is_simulation(data):
     """Determines if saved data is a simulation."""
-    if data['net'] is not None:
-        return True
-    return False
+    return data['net'] is not None