diff --git a/.travis.sh b/.travis.sh
index d57b784df..78351f095 100755
--- a/.travis.sh
+++ b/.travis.sh
@@ -24,7 +24,7 @@ function configure()
       -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE:-Debug} \
       -DGTSAM_BUILD_TESTS=${GTSAM_BUILD_TESTS:-OFF} \
       -DGTSAM_BUILD_UNSTABLE=${GTSAM_BUILD_UNSTABLE:-ON} \
-      -DGTSAM_WITH_TBB=${GTSAM_WITH_TBB:-ON} \
+      -DGTSAM_WITH_TBB=${GTSAM_WITH_TBB:-OFF} \
       -DGTSAM_USE_QUATERNIONS=${GTSAM_USE_QUATERNIONS:-OFF} \
       -DGTSAM_BUILD_EXAMPLES_ALWAYS=${GTSAM_BUILD_EXAMPLES_ALWAYS:-ON} \
       -DGTSAM_ALLOW_DEPRECATED_SINCE_V4=${GTSAM_ALLOW_DEPRECATED_SINCE_V4:-OFF} \
diff --git a/.travis.yml b/.travis.yml
index e4e1a3440..870a4bdb9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,7 +44,7 @@ jobs:
   - stage: compile
     os: osx
     compiler: gcc
-    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_WITH_TBB=OFF
+    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF
     script: bash .travis.sh -b
   - stage: compile
     os: osx
@@ -55,7 +55,7 @@ jobs:
   - stage: compile
     os: osx
     compiler: clang
-    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_WITH_TBB=OFF
+    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF
     script: bash .travis.sh -b
   - stage: compile
     os: osx
@@ -66,7 +66,7 @@ jobs:
   - stage: compile
     os: linux
     compiler: gcc
-    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_WITH_TBB=OFF
+    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF
     script: bash .travis.sh -b
   - stage: compile
     os: linux
@@ -77,7 +77,7 @@ jobs:
   - stage: compile
     os: linux
     compiler: clang
-    env: CC=clang-9 CXX=clang++-9 CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_WITH_TBB=OFF
+    env: CC=clang-9 CXX=clang++-9 CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF
     script: bash .travis.sh -b
   - stage: compile
     os: linux
@@ -88,13 +88,13 @@ jobs:
   - stage: special
     os: linux
     compiler: clang
-    env: CC=clang-9 CXX=clang++-9 CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_ALLOW_DEPRECATED_SINCE_V4=ON GTSAM_WITH_TBB=OFF
+    env: CC=clang-9 CXX=clang++-9 CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_ALLOW_DEPRECATED_SINCE_V4=ON
     script: bash .travis.sh -b
-# on Linux, with GTSAM_WITH_TBB not off to make sure GTSAM still compiles/tests
+# on Linux, with GTSAM_WITH_TBB on to make sure GTSAM still compiles/tests
   - stage: special
     os: linux
     compiler: gcc
-    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF
+    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_WITH_TBB=ON
     script: bash .travis.sh -b
 # -------- STAGE 2: TESTS -----------
 # on Mac, GCC
@@ -106,7 +106,7 @@ jobs:
   - stage: test
     os: osx
     compiler: clang
-    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_WITH_TBB=OFF
+    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF
     script: bash .travis.sh -t
   - stage: test
     os: linux
@@ -116,7 +116,7 @@ jobs:
   - stage: test
     os: linux
     compiler: gcc
-    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF GTSAM_WITH_TBB=OFF
+    env: CMAKE_BUILD_TYPE=Debug GTSAM_BUILD_UNSTABLE=OFF
     script: bash .travis.sh -t
   - stage: test
     os: linux