diff --git a/.travis.yml b/.travis.yml
index b3fae60c..5136721a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,6 @@ python:
   - "2.7"
 compiler:
   - gcc
-  - clang
 
 install:
   - sudo sh -c 'echo "deb http://packages.ros.org/ros-shadow-fixed/ubuntu precise main" > /etc/apt/sources.list.d/ros-latest.list'
@@ -18,6 +17,6 @@ install:
 
 script:
   - source /opt/ros/hydro/setup.bash
-  - catkin_make tests --source .
-  - catkin_make run_tests --source .
-  - catkin_make install --source .
+  - catkin_make tests --source . -j1
+  - catkin_make run_tests --source . -j1
+  - catkin_make install --source . -j1