diff --git a/.travis.yml b/.travis.yml
index 8e0d0551..28668e83 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,6 @@ matrix:
   include:
     - php: '7.0'
     - php: '7.1'
-      env: SNIFF=1
     - php: '7.2'
     - php: 'nightly'