diff --git a/curacao/hardware.nix b/curacao/hardware.nix
index 3852e5b..07c7c28 100644
--- a/curacao/hardware.nix
+++ b/curacao/hardware.nix
@@ -69,6 +69,8 @@ in
     home-manager.users.geoffrey =
       { ... }:
       {
+        # Uses Vulkan by default, which adds too much green and artefacts.
+        programs.mpv.config.gpu-api = "opengl";
         services = {
           kanshi.settings = [
             {