diff --git a/libs/glfw/system_sdk.zig b/libs/glfw/system_sdk.zig
index 9e84f7b3..3b9c2ab9 100644
--- a/libs/glfw/system_sdk.zig
+++ b/libs/glfw/system_sdk.zig
@@ -195,7 +195,7 @@ fn determineSdkRoot(allocator: std.mem.Allocator, org: []const u8, name: []const
     var sdk_root_dir: []const u8 = undefined;
     var sdk_path_dir: []const u8 = undefined;
     var custom_sdk_path = false;
-    if (std.process.getEnvVarOwned(allocator, "SDK_PATH")) |sdk_path| {
+    if (std.process.getEnvVarOwned(allocator, "MACH_SDK_PATH")) |sdk_path| {
         custom_sdk_path = true;
         sdk_path_dir = sdk_path;
         sdk_root_dir = try std.fs.path.join(allocator, &.{ sdk_path, name });
diff --git a/src/platform/native.zig b/src/platform/native.zig
index 2d733912..85268bed 100644
--- a/src/platform/native.zig
+++ b/src/platform/native.zig
@@ -656,7 +656,7 @@ fn glfwSizeOptional(size: structs.SizeOptional) glfw.Window.SizeOptional {
 
 /// Check if gamemode should be activated
 fn activateGamemode(allocator: std.mem.Allocator) error{ OutOfMemory, InvalidUtf8 }!bool {
-    if (try getEnvVarOwned(allocator, "GAMEMODE")) |env| {
+    if (try getEnvVarOwned(allocator, "MACH_USE_GAMEMODE")) |env| {
         defer allocator.free(env);
         return !(std.ascii.eqlIgnoreCase(env, "off") or std.ascii.eqlIgnoreCase(env, "false"));
     }