diff --git a/Cantera/python/examples/equilibrium/simple_test/.cvsignore b/Cantera/python/examples/equilibrium/simple_test/.cvsignore
index cb0786685..c4398cee9 100644
--- a/Cantera/python/examples/equilibrium/simple_test/.cvsignore
+++ b/Cantera/python/examples/equilibrium/simple_test/.cvsignore
@@ -3,4 +3,5 @@ ct2ctml.log
 diff_out_0.txt
 h2o2.xml
 output_0.txt
+output_1.txt
 transport_log.xml