diff --git a/.travis.sh b/.travis.sh
index 422f68065..c2b4e0590 100755
--- a/.travis.sh
+++ b/.travis.sh
@@ -64,6 +64,7 @@ function configure()
       -DGTSAM_ALLOW_DEPRECATED_SINCE_V4=${GTSAM_ALLOW_DEPRECATED_SINCE_V4:-OFF} \
       -DGTSAM_BUILD_WITH_MARCH_NATIVE=OFF \
       -DCMAKE_VERBOSE_MAKEFILE=ON
+      -DBOOST_ROOT=$BOOST_ROOT
 }