diff --git a/.appveyor.yml b/.appveyor.yml
index 3ecb61ab..1da47d3e 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -23,23 +23,23 @@ install:
   - "python -c \"import struct; print(struct.calcsize('P') * 8)\""
 
   # Download miktex portable (if not cached)
-  - ps: "If (!(Test-Path miktex-portable.exe)){wget http://mirrors.ctan.org/systems/win32/miktex/setup/miktex-portable.exe -OutFile ./miktex-portable.exe}"
+  #- ps: "If (!(Test-Path miktex-portable.exe)){wget http://mirrors.ctan.org/systems/win32/miktex/setup/miktex-portable.exe -OutFile ./miktex-portable.exe}"
 
   # Unzip miktex portable
-  - "7z x miktex-portable.exe * -aot -omiktex > nul"
+  #- "7z x miktex-portable.exe * -aot -omiktex"
 
   # Let the binaries be directly callable
-  - cmd: set PATH=%PATH%;C:\projects\patacrep\miktex\miktex\bin
+  #- cmd: set PATH=%PATH%;C:\projects\patacrep\miktex\texmfs\install\miktex\bin
 
   # Update some packages to prevent ltluatex bug
   # - cmd: mpm.exe --update=miktex-bin-2.9 --verbose
   # - cmd: mpm.exe --update=ltxbase --update=luatexbase --update=luaotfload --update=miktex-luatex-base --update=fontspec
 
   # Manually install required texlive packages
-  - cmd: mpm.exe --install-some texlive_packages.txt
+  #- cmd: mpm.exe --verbose --install-some texlive_packages.txt
 
   # Update fonts
-  - cmd: luaotfload-tool.exe --update
+  #- cmd: luaotfload-tool.exe --update
 
 build: false  # Not a C# project, build stuff at the test step instead.
 
@@ -50,5 +50,5 @@ test_script:
   - "tox"
 
 # Cache Miktex Portable file
-cache:
-- C:\projects\patacrep\miktex-portable.exe
+#cache:
+#- C:\projects\patacrep\miktex-portable.exe
diff --git a/patacrep/files.py b/patacrep/files.py
index 967844d4..114513d4 100644
--- a/patacrep/files.py
+++ b/patacrep/files.py
@@ -5,10 +5,10 @@ from functools import lru_cache
 import logging
 import os
 import pkgutil
-import posixpath
 import re
 import sys
 from zipimport import zipimporter
+import posixpath
 
 from patacrep import utils
 from patacrep import __DATADIR__
diff --git a/test/test_book/test_compilation.py b/test/test_book/test_compilation.py
index 0439becd..3b864c6b 100644
--- a/test/test_book/test_compilation.py
+++ b/test/test_book/test_compilation.py
@@ -122,8 +122,8 @@ class FileTest(unittest.TestCase, metaclass=dynamic.DynamicTest):
     @classmethod
     def _create_compilation_test(cls, base, onthefly=False):
         """Return a function testing that `base.tex` is correctly compiled."""
-        @unittest.skipIf('TRAVIS' in os.environ,
-                         "Travis does not support lualatex compilation yet")
+        @unittest.skipIf('CI' in os.environ,
+                         "Travis or AppVeyor does not support lualatex compilation yet")
         def test_compilation(self):
             """Test that `base` is rendered to pdf."""
             # Check compilation
diff --git a/texlive_packages.txt b/texlive_packages.txt
index f6064a0c..2ef1b312 100644
--- a/texlive_packages.txt
+++ b/texlive_packages.txt
@@ -14,7 +14,6 @@ ms
 newunicodechar
 pgf
 tipa
-unicode-data
 url
 xcolor
 xstring