diff --git a/tests/update_results.py b/tests/update_results.py
index 7e6e54b9c4..9b51076a4a 100644
--- a/tests/update_results.py
+++ b/tests/update_results.py
@@ -36,7 +36,7 @@ for root, dirs, files in folders:
   # Process results
   os.system('python results.py') 
   os.system('mv results_test.dat results_true.dat')
-  os.system('rm *.binary')
+  os.system('rm -f *.binary *.out')
 
   # Go back a directory
   os.chdir('..')