diff --git a/src/resolve/resolved-dns-query.c b/src/resolve/resolved-dns-query.c
index 3b5e456db2..192bfd3bf5 100644
--- a/src/resolve/resolved-dns-query.c
+++ b/src/resolve/resolved-dns-query.c
@@ -381,6 +381,8 @@ DnsQuery *dns_query_free(DnsQuery *q) {
         if (!q)
                 return NULL;
 
+        q->timeout_event_source = sd_event_source_disable_unref(q->timeout_event_source);
+
         while (q->auxiliary_queries)
                 dns_query_free(q->auxiliary_queries);