diff --git a/meson.build b/meson.build
index cf9cfe66e..73cf0d51f 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project('Aegisub', ['c', 'cpp'],
         license: 'BSD-3-Clause',
         meson_version: '>=0.55.0',
-        default_options: ['cpp_std=c++11', 'b_lto=true'],
+        default_options: ['cpp_std=c++11', 'b_lto=true', 'buildtype=debugoptimized'],
         version: '3.2.2')
 
 cmake = import('cmake')