diff --git a/travis/tools.sh b/travis/tools.sh
index 7c04963..0584580 100644
--- a/travis/tools.sh
+++ b/travis/tools.sh
@@ -19,6 +19,9 @@ dump_output
 kill $PING_LOOP_PID
 END
 
+# exits on fail
+set -e
+
 export PING_SLEEP=30s
 export WORKDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 export BUILD_OUTPUT=$WORKDIR/build.out