diff --git a/lib/tests/behat/behat_general.php b/lib/tests/behat/behat_general.php
index d8d5264991a..2cdd394145a 100644
--- a/lib/tests/behat/behat_general.php
+++ b/lib/tests/behat/behat_general.php
@@ -982,7 +982,7 @@ class behat_general extends behat_base {
      * Example: I change window size to "small" or I change window size to "1024x768"
      *
      * @throws ExpectationException
-     * @Then /^I change window size to "([^"](small|medium|large|\d+x\d+))"$/
+     * @Then /^I change window size to "(small|medium|large|\d+x\d+)"$/
      * @param string $windowsize size of the window (small|medium|large|wxh).
      */
     public function i_change_window_size_to($windowsize) {