diff --git a/docs/env_vars.md b/docs/env_vars.md
index 22626c6b..6a0a9442 100644
--- a/docs/env_vars.md
+++ b/docs/env_vars.md
@@ -48,8 +48,8 @@ wlroots reads these environment variables
 ## scenes
 
 * *WLR_SCENE_DEBUG_DAMAGE*: specifies debug options for screen damage related
-tasks for compositors that use scenes. (available options: NONE, RERENDER,
-HIGHLIGHT)
+  tasks for compositors that use scenes (available options: none, rerender,
+  highlight)
 
 # Generic