diff --git a/meson.build b/meson.build
index d8e0e1bb..2d131a82 100644
--- a/meson.build
+++ b/meson.build
@@ -19,6 +19,7 @@ add_project_arguments(
     '-Werror=missing-field-initializers',
     '-Werror=incompatible-pointer-types',
     '-Werror=int-conversion',
+    '-Werror=redundant-decls',
     '-Wformat-nonliteral',
     '-Wformat-security',
     '-Winit-self',