diff --git a/meson.build b/meson.build
index 24b1b37..37af9df 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
   'owdt',
   'c',
-  default_options : ['c_std=c17']
+  default_options : ['c_std=gnu11,c11']
 )
 
 eventloop_epoll = 'epoll'