Re-enable hhvm/mysqli tests
diff --git a/.travis.yml b/.travis.yml
index c069aac..0131f5a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,8 +29,6 @@
     - php: hhvm
   exclude:
     - php: hhvm
-      env: DB=mysqli
-    - php: hhvm
       env: DB=pgsql
     - php: hhvm
       env: DB=pdo/pgsql