diff --git a/Cantera/python/examples/reactors/mix1_sim/cleanup b/Cantera/python/examples/reactors/mix1_sim/cleanup
index 40e1dbd9e..e499c5640 100755
--- a/Cantera/python/examples/reactors/mix1_sim/cleanup
+++ b/Cantera/python/examples/reactors/mix1_sim/cleanup
@@ -2,4 +2,4 @@
 #
 /bin/rm -rf equilibrate_log*.html
 /bin/rm -rf .cttmp* ct2ctml.log transport_log.xml vcs_equilibrate_res*.csv \
-            catcomb.csv output_0.txt diff*
+            catcomb.csv output_0.txt diff* gri30.xml air.xml