1 files changed, 2 insertions, 1 deletions
diff --git a/util.py b/util.py
index 390e04c..9f9d186 100644
--- a/util.py
+++ b/util.py
@@ -17,6 +17,7 @@
 
 import cliapp
 import contextlib
+import copy
 import os
 import sys
 import urlparse
@@ -33,7 +34,7 @@ def run_morph(args, **kwargs):
     self-contained Morph test suite.
 
     '''
-    morph_command = config.MORPH_COMMAND
+    morph_command = copy.copy(config.MORPH_COMMAND)
     if isinstance(morph_command, str):
         if ' ' in morph_command:
             morph_command = morph_command.split(' ')