diff --git a/meson.build b/meson.build
index a771f06..dbf46a8 100644
--- a/meson.build
+++ b/meson.build
@@ -35,6 +35,7 @@
 conf_data = configuration_data()
 conf_data.set_quoted('INSTANCES',host_instances)
 conf_data.set('POST_CODE_BYTES', get_option('post-code-bytes'))
+conf_data.set('DEBUG_CARD_FRAME_SIZE', get_option('debug-card-frame-size'))
 
 configure_file(input: 'meson_config.h.in',
                output: 'config.h',