diff --git a/.travis.yml b/.travis.yml
index d747b7301..e6d7ddff3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -102,7 +102,7 @@ jobs:
             - g++-7
           sources:
             - ubuntu-toolchain-r-test
-    - compiler: clang++-3.4
+    - compiler: clang++
       env: TOOLSET=clang
       os: linux
       dist: trusty
diff --git a/src/engine/build.sh b/src/engine/build.sh
index 90d9cab66..935851da2 100755
--- a/src/engine/build.sh
+++ b/src/engine/build.sh
@@ -311,7 +311,7 @@ case $BOOST_JAM_TOOLSET in
 
     clang*)
     echo_run ${CXX:=clang} --version
-    BOOST_JAM_CXX="${CXX} -x c++ -O3 -std=c++11"
+    BOOST_JAM_CXX="${CXX} -x c++ -O3 -std=c++11 -v"
     BOOST_JAM_TOOLSET=clang
     BOOST_RELEASE="-O3 -s -flto"
     BOOST_DEBUG="-O0 -fno-inline -g"