diff --git a/.travis.yml b/.travis.yml
index beb46f4..4cc245f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -92,7 +92,11 @@ matrix:
       os: linux
     - env:
         - COMPILER=g++-4.8
-        - WITH_UNIT_TESTS=ON
+        - WITH_UNIT_TESTS=OFF
+      os: osx
+    - env:
+        - COMPILER=clang++
+        - WITH_UNIT_TESTS=OFF
       os: osx
 
 before_script: