diff --git a/README.md b/README.md
index c385146f..41ba2252 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,11 @@ For Steam games, you can add this as a launch option:
 
 Or alternatively, add `MANGOHUD=1` to your shell profile (Vulkan only).
 
-Some linux native games overrides LD_PRELOAD and stopping MangoHud from working. You can sometimes fix this by editing LD_PRELOAD in the start script
+## OpenGL
+
+OpenGL games may also need `dlsym` hooking. Add `MANGOHUD_DLSYM=1` your command like `MANGOHUD_DLSYM=1 mangohud %command%` for Steam.
+
+Some Linux native OpenGL games overrides LD_PRELOAD and stops MangoHud from working. You can sometimes fix this by editing LD_PRELOAD in the start script
 `LD_PRELOAD=/path/to/mangohud/lib/`
 
 ## Hud configuration