diff --git a/build.zig b/build.zig
index b8be1ce..b974c20 100644
--- a/build.zig
+++ b/build.zig
@@ -2,8 +2,6 @@ const std = @import("std");
 const nifbuild = @import("lib/nif/build.zig");
 
 pub fn build(b: *std.build.Builder) void {
-    b.use_stage1 = true;
-
     const target = b.standardTargetOptions(.{});
     const mode = b.standardReleaseOptions();
     const strip = b.option(bool, "strip", "strip output binary; default: false") orelse false;
diff --git a/src/ngui.zig b/src/ngui.zig
index a466b29..7e90a96 100644
--- a/src/ngui.zig
+++ b/src/ngui.zig
@@ -19,10 +19,9 @@ const logger = std.log.scoped(.ngui);
 const lvgl_logger = std.log.scoped(.lvgl); // logs LV_LOG_xxx messages
 
 extern "c" fn lv_timer_handler() u32;
-extern "c" fn lv_log_register_print_cb(fn (msg: [*:0]const u8) callconv(.C) void) void;
+extern "c" fn lv_log_register_print_cb(*const fn (msg: [*:0]const u8) callconv(.C) void) void;
 const LvTimer = opaque {};
-//const LvTimerCallback = *const fn (timer: *LvTimer) callconv(.C) void; // stage2
-const LvTimerCallback = fn (timer: *LvTimer) callconv(.C) void;
+const LvTimerCallback = *const fn (timer: *LvTimer) callconv(.C) void;
 extern "c" fn lv_timer_create(callback: LvTimerCallback, period_ms: u32, userdata: ?*anyopaque) *LvTimer;
 extern "c" fn lv_timer_del(timer: *LvTimer) void;
 extern "c" fn lv_timer_set_repeat_count(timer: *LvTimer, n: i32) void;