diff --git a/.travis.yml b/.travis.yml
index efeac010..c74e1020 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,13 +13,13 @@ matrix:
     - os: linux
       group: deprecated-2017Q4
       compiler: gcc
-      sudo=true
+      sudo : true
       install: ./ci/install-linux.sh && ./ci/log-config.sh
       script: ./ci/build-linux-bazel.sh
     - os: linux
       group: deprecated-2017Q4
       compiler: clang
-      sudo=true
+      sudo : true
       install: ./ci/install-linux.sh && ./ci/log-config.sh
       script: ./ci/build-linux-bazel.sh
     - os: linux