diff --git a/scripts/travis_before_install.sh b/scripts/travis_before_install.sh
index 0d5b299d4..c94d73e71 100755
--- a/scripts/travis_before_install.sh
+++ b/scripts/travis_before_install.sh
@@ -133,7 +133,7 @@ if [[ ${TRAVIS_OS_NAME} == "linux" ]]; then
                             llvm-3.4 # required for mesa
 
     echo "install_mesa"
-    MASON_PLATFORM = mason install mesa 10.3.1
+    MASON_PLATFORM= mason install mesa 10.3.1
 
     echo "install_awscli"
     sudo pip install awscli