diff --git a/processing/pre/mentat_spectralBox b/processing/pre/mentat_spectralBox
index 32591571e..8f2e393ff 100755
--- a/processing/pre/mentat_spectralBox
+++ b/processing/pre/mentat_spectralBox
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-import os, sys, math, re, threading, time
+import os, sys, math, re, threading, time, string
 from optparse import OptionParser, OptionGroup, Option, SUPPRESS_HELP
 
 releases = {'2010':['linux64',''],