diff --git a/songbook-makeindex.py b/songbook-makeindex.py
index d5252469..8509aa61 100755
--- a/songbook-makeindex.py
+++ b/songbook-makeindex.py
@@ -14,7 +14,7 @@ import os.path
 import glob
 import re
 from optparse import OptionParser
-import title_sort
+import sortindex
 import locale
 
 # Pattern set to ignore latex command in title prefix
@@ -61,7 +61,7 @@ class index:
 
     def idxBlockToStr(self, letter, entries):
         str = '\\begin{idxblock}{'+letter+'}'+'\n'
-        for key in sorted(entries.keys(), key=title_sort.sortkey):
+        for key in sorted(entries.keys(), key=sortindex.sortkey):
             str += self.entryToStr(key, entries[key])
         str += '\\end{idxblock}'+'\n'
         return str
diff --git a/songbook.py b/songbook.py
index f4a09cf6..1e694762 100755
--- a/songbook.py
+++ b/songbook.py
@@ -8,7 +8,7 @@ import glob
 import re
 import json
 import locale
-import title_sort
+import sortindex
 
 def matchRegexp(reg, iterable):
     return [ m.group(1) for m in (reg.match(l) for l in iterable) if m ]
@@ -97,7 +97,7 @@ def makeTexFile(sb, output):
     if songs == "all":
         songs = map(lambda x: x[6:], glob.glob('songs/*/*.sg'))
 
-    songs.sort(key=title_sort.sortkey)
+    songs.sort(key=sortindex.sortkey)
     if len(songs) > 0:
         out.write(formatDefinition('songslist', songslist(songs)))
     out.write('\\makeatother\n')
diff --git a/title_sort.py b/sortindex.py
similarity index 100%
rename from title_sort.py
rename to sortindex.py