diff --git a/patacrep/build.py b/patacrep/build.py
index 73efbbcc..a66619d7 100644
--- a/patacrep/build.py
+++ b/patacrep/build.py
@@ -10,7 +10,7 @@ from subprocess import Popen, PIPE, call, check_call
 
 import yaml
 
-from patacrep import authors, content, encoding, errors, files, pkg_datapath, utils
+from patacrep import authors, content, encoding, errors, pkg_datapath, utils
 from patacrep.index import process_sxd
 from patacrep.templates import TexBookRenderer, iter_bookoptions