diff --git a/.travis.yml b/.travis.yml
index 52949d78c..a58c032e1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,6 @@ matrix:
     - compiler: gcc
       os: linux
       env: SWIGLANG=php VER=7.0 CONFIGOPTS=--enable-cpp11-testing
-      CPP11=1
       dist: xenial
     - compiler: gcc
       os: linux