diff --git a/meson.build b/meson.build
index 7e18d31..f55eb60 100644
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,7 @@ project(
   'cws',
   'c',
   version: '0.1.0',
-  default_options: ['c_std=c18', 'warning_level=3'],
+  default_options: ['c_std=c11', 'warning_level=3'],
 )
 
 cc = meson.get_compiler('c')