diff --git a/.travis.yml b/.travis.yml
index cfb9add1b..d7a7735b2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,6 +29,7 @@ script:
     - cd Pillow
     - python selftest.py --installed
     - pip install nose
+    - export NOSE_PROCESSES=0
     - if [ -f test-installed.py ]; then
       python test-installed.py ;
       else