diff --git a/src/gen-vowel-constraints.py b/src/gen-vowel-constraints.py
index 190c041..e0ae2a6 100755
--- a/src/gen-vowel-constraints.py
+++ b/src/gen-vowel-constraints.py
@@ -25,7 +25,7 @@
 import sys
 
 if len (sys.argv) != 3:
-	print ('usage: ./gen-vowel-constraints.py IndicShapingInvalidCluster.txt Scripts.txt', file=sys.stderr)
+	print ('usage: ./gen-vowel-constraints.py ms-use/IndicShapingInvalidCluster.txt Scripts.txt', file=sys.stderr)
 	sys.exit (1)
 
 with io.open (sys.argv[2], encoding='utf-8') as f:
@@ -156,7 +156,7 @@
 print ('/*')
 print (' * The following functions are generated by running:')
 print (' *')
-print (' *   %s IndicShapingInvalidCluster.txt Scripts.txt' % sys.argv[0])
+print (' *   %s ms-use/IndicShapingInvalidCluster.txt Scripts.txt' % sys.argv[0])
 print (' *')
 print (' * on files with these headers:')
 print (' *')