diff --git a/src/resolve/resolved-dns-question.h b/src/resolve/resolved-dns-question.h
index 91bbeaed5bf..b7dc60c9c8b 100644
--- a/src/resolve/resolved-dns-question.h
+++ b/src/resolve/resolved-dns-question.h
@@ -21,7 +21,7 @@ struct DnsQuestionItem {
 struct DnsQuestion {
         unsigned n_ref;
         size_t n_keys, n_allocated;
-        DnsQuestionItem items[0];
+        DnsQuestionItem items[];
 };
 
 DnsQuestion *dns_question_new(size_t n);