diff --git a/machines/SteamDeck/configuration.nix b/machines/SteamDeck/configuration.nix
index bbf55b4..ea49bd9 100755
--- a/machines/SteamDeck/configuration.nix
+++ b/machines/SteamDeck/configuration.nix
@@ -44,6 +44,14 @@
 			autoStart = true;
 			user = "toast";
 			desktopSession = "plasmawayland";
+			environment = {
+				/*
+				Steam already has a mangohud overlay, so this
+				avoids having two overlays at once
+				*/
+				MANGOHUD = "0";
+				MANHOGUD_DLSYM = "0";
+			};
 		};
 		decky-loader = {
 			enable = true;
diff --git a/roles/gaming/mangohud.nix b/roles/gaming/mangohud.nix
index fe418d4..47b37be 100644
--- a/roles/gaming/mangohud.nix
+++ b/roles/gaming/mangohud.nix
@@ -1,10 +1,14 @@
 { config, ... }:
 
 {
+	# This does the same as enableSessionWide does on the mangohud config
+	environment.sessionVariables = { MANGOHUD = "1"; MANGOHUD_DLSYM = "1"; };
+
 	home-manager.users.toast = { config, ... }:
 	{
 		programs.mangohud = {
 			enable = true;
+			# TODO: fix envvars set by home manager not applying for some reason
 			# This only works for Vulkan, openGL programs still need the mangohud wrapper
 			enableSessionWide = true;
 			settings = {