diff --git a/travis/setup-php-extensions.sh b/travis/setup-php-extensions.sh
index e122be0597..2b0bbb5baf 100755
--- a/travis/setup-php-extensions.sh
+++ b/travis/setup-php-extensions.sh
@@ -58,7 +58,7 @@ fi
 phpenv config-rm xdebug.ini || true
 
 # memcached
-echo "extension = memcached.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
+install_php_extension 'memcached' "$php_ini_file"
 
 # redis
 # Disabled redis for now as it causes travis to fail