diff --git a/patacrep/content/tex.py b/patacrep/content/tex.py
index adf6950e..8f2ebcb9 100755
--- a/patacrep/content/tex.py
+++ b/patacrep/content/tex.py
@@ -43,9 +43,8 @@ def parse(keyword, argument, config):
         argument = [argument]
 
     filelist = ContentList()
-    basefolders = itertools.chain(
-        (path.fullpath for path in config['_songdir']),
-        files.iter_datadirs(config['_datadir'], 'latex'),
+    basefolders = [path.fullpath for path in config['_songdir']] + list(
+        files.iter_datadirs(config['_datadir'], 'latex')
         )
     for filename in argument:
         checked_file = None