diff --git a/.travis.yml b/.travis.yml
index e034df2d5b3f6b8586f82e25bb5a7a347795913c..0806add931dc77fbbf4a1044e567265d743e6f3a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,7 @@ env:
     - DO_CPPCHECK_ON_BRANCH=""
     - DO_INSTALL_DOC_EXCEPT_ON_BRANCH=""
     - BUILD_WITH_CATKIN_SUPPORT=false
-    - MAKEFLAGS="-j2"
+    - MAKEFLAGS="-j1"
 
 jobs:
   include: