diff --git a/.travis.yml b/.travis.yml
index 7ae9f4952ddd..3fe94db8a424 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,7 @@ before_script:
   - sudo apt-get update -qq || true
   - sudo apt-get install -y python3 gcc-multilib pkg-config libffi-dev libffi-dev:i386 qemu-system mingw32
   - sudo apt-get install -y --force-yes gcc-arm-none-eabi
+  - sudo apt-get install -y clang-3.6
   # For teensy build
   - sudo apt-get install realpath
   # For coverage testing
@@ -41,6 +42,10 @@ script:
   #- (cd tests && MICROPY_CPYTHON3=python3.4 ./run-tests)
   #- (cd tests && MICROPY_CPYTHON3=python3.4 ./run-tests --emit native)
 
+  # LLVM Clang build, partially covers MacOSX build
+  - make -C unix clean
+  - make -C unix CC=clang-3.6 test
+
   # run tests with coverage info
   - make -C unix coverage
   - (cd tests && MICROPY_CPYTHON3=python3.4 MICROPY_MICROPYTHON=../unix/micropython_coverage ./run-tests)