diff --git a/.travis.yml b/.travis.yml
index 1275a5c..59011b1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -100,7 +100,7 @@ before_script:
  - ${COMPILER} --version
  - mkdir build
  - cd build
- - cmake ..
+ - cmake -DWITH_UNIT_TESTS=${WITH_UNIT_TESTS} ..
 
 script: make