diff --git a/src/Codeception/Module/WebDriver.php b/src/Codeception/Module/WebDriver.php
index 5d23d45..533b6fb 100644
--- a/src/Codeception/Module/WebDriver.php
+++ b/src/Codeception/Module/WebDriver.php
@@ -106,7 +106,7 @@
  * Running tests inside Docker is as easy as pulling [official selenium image](https://github.com/SeleniumHQ/docker-selenium) and starting a container with Chrome:
  *
  * ```
- * docker run --net=host selenium/standalone-chrome
+ * docker run --net=host --shm-size 2g selenium/standalone-chrome
  * ```
  *
  * By using `--net=host` allow Selenium to access local websites.