diff --git a/.travis.yml b/.travis.yml
index 08fa756..47c512f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ python:
   - "3.8-dev"
 env:
   - MC_VERSION=1.15
+  - PIL_INCLUDE_DIR=.
 before_install:
   - wget https://raw.githubusercontent.com/python-pillow/Pillow/master/src/libImaging/Imaging.h
   - wget https://raw.githubusercontent.com/python-pillow/Pillow/master/src/libImaging/ImagingUtils.h