diff --git a/workspace/Dockerfile b/workspace/Dockerfile
index 1f728bd0..e5338f64 100644
--- a/workspace/Dockerfile
+++ b/workspace/Dockerfile
@@ -37,7 +37,7 @@ MAINTAINER Mahmoud Zalt <mahmoud@zalt.me>
 #   - INSTALL_MONGO=            false
 #   - COMPOSER_GLOBAL_INSTALL=  false
 #   - INSTALL_NODE=             false
-#   - INSTALL_drush=            false
+#   - INSTALL_DRUSH=            false
 #
 
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