diff --git a/swiftest/simulation_class.py b/swiftest/simulation_class.py
index d4e3a4e0f..e4a5ca7c9 100644
--- a/swiftest/simulation_class.py
+++ b/swiftest/simulation_class.py
@@ -450,6 +450,7 @@ def run(self,
         # Save initial conditions
         if not self.restart:
             self.clean()
+            self.save()
             
         # Write out the current parameter set before executing run
         self.write_param(verbose=False,**kwargs)