diff --git a/scripts/approvalTests.py b/scripts/approvalTests.py
index a5c24a9d..a06518d5 100644
--- a/scripts/approvalTests.py
+++ b/scripts/approvalTests.py
@@ -15,7 +15,7 @@ baselinesPath = os.path.join( catchPath, 'projects/SelfTest/Baselines/approvedRe
 rawResultsPath = os.path.join( catchPath, 'projects/SelfTest/Baselines/_rawResults.tmp' )
 filteredResultsPath = os.path.join( catchPath, 'projects/SelfTest/Baselines/unapprovedResults.txt' )
 
-print "len(sys.argv) = " + len(sys.argv)
+print "len(sys.argv) = " + str(len(sys.argv))
 print "sys.argv[0] = " + sys.argv[0]
 print "sys.argv[1] = " + sys.argv[1]