diff --git a/.travis.yml b/.travis.yml
index 361d8e9..815c05f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,7 @@
 
 script:
   - $CXX --version
-  - mkdir build && cd build
+  - mkdir -p build && cd build
   - cmake -DREACTOR_BACKEND=$REACTOR_BACKEND ..
   - make -j2
   - ./unittests