diff --git a/.travis.yml b/.travis.yml
index dfc46486b3..bd4e3e1dd1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,6 +32,7 @@ matrix:
      env:
        CMAKE_CXX_COMPILER=clang++-3.4
        CMAKE_BUILD_TYPE=Release
+       LEAN_EXTRA_MAKE_OPTS=-t0
        TCMALLOC=ON
 
    - os: linux
@@ -78,7 +79,6 @@ matrix:
      env:
        CMAKE_CXX_COMPILER=clang++-3.4
        CMAKE_BUILD_TYPE=Debug
-       LEAN_EXTRA_MAKE_OPTS=-t0
        TCMALLOC=ON
 
    - os: linux
diff --git a/.travis.yml.in b/.travis.yml.in
index 63f9c9f744..51ddd848cc 100644
--- a/.travis.yml.in
+++ b/.travis.yml.in
@@ -32,6 +32,7 @@ matrix:
      env:
        CMAKE_CXX_COMPILER=clang++-3.4
        CMAKE_BUILD_TYPE=Release
+       LEAN_EXTRA_MAKE_OPTS=-t0
        TCMALLOC=ON
 
    - os: linux
@@ -78,7 +79,6 @@ matrix:
      env:
        CMAKE_CXX_COMPILER=clang++-3.4
        CMAKE_BUILD_TYPE=Debug
-       LEAN_EXTRA_MAKE_OPTS=-t0
        TCMALLOC=ON
 
    - os: linux