diff --git a/.travis.yml b/.travis.yml
index fce0db5301e400cd0067948c41b28d69873f532f..cbc5efaaf1d30ec722cc44f40b10dd6ef528e767 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,7 @@ before_script:
   - git config --global user.email "you@example.com"
   - git config --global user.name "Your Name"
 script:
-  - export NO_GPU_EXECUTION
+  - export NO_GPU_EXECUTION=1
   - pip install -e .
   - python setup.py test
 after_success: