diff --git a/plugins/sudoers/defaults.c b/plugins/sudoers/defaults.c
index 8db775a82..910fb5f1e 100644
--- a/plugins/sudoers/defaults.c
+++ b/plugins/sudoers/defaults.c
@@ -87,7 +87,7 @@ struct early_default {
 
 static struct early_default early_defaults[] = {
 #ifdef FQDN
-    { "fqdn", "true", true },
+    { "fqdn", NULL, true },
 #else
     { "fqdn" },
 #endif