diff --git a/.travis.yml b/.travis.yml
index f38b71d1c..c9386765c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,8 +20,7 @@ before_install:
 
 script:
   - test -d _build || mkdir _build
-  - test -d _install || mkdir _install
   - cd _build
-  - cmake -DCMAKE_INSTALL_PREFIX=../_install -DCMAKE_BUILD_TYPE=Debug -DACE_USE_EXTERNAL=1 ..
+  - cmake -DCMAKE_BUILD_TYPE=Debug -DACE_USE_EXTERNAL=1 ..
 
   - make -j4