diff --git a/meson.build b/meson.build
index ebc0e45f2..ef75306c2 100644
--- a/meson.build
+++ b/meson.build
@@ -4,7 +4,7 @@ project('glib', 'c', 'cpp',
   meson_version : '>= 0.52.0',
   default_options : [
     'buildtype=debugoptimized',
-    'warning_level=1',
+    'warning_level=3',
     'c_std=gnu99'
   ]
 )