diff --git a/.travis.yml b/.travis.yml
index ce47432..59369b3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -59,6 +59,7 @@ install:
   - cmake --version
 
 before_script:
+  - eval "${MATRIX_EVAL}"
   - mkdir build
   - cd build
   - export VERBOSE=1