diff --git a/src/libsystemd/sd-varlink/sd-varlink.c b/src/libsystemd/sd-varlink/sd-varlink.c
index 1b0efa3992..f484c9da44 100644
--- a/src/libsystemd/sd-varlink/sd-varlink.c
+++ b/src/libsystemd/sd-varlink/sd-varlink.c
@@ -3297,6 +3297,7 @@ VarlinkServerSocket* varlink_server_socket_free(VarlinkServerSocket *ss) {
         if (!ss)
                 return NULL;
 
+        sd_event_source_disable_unref(ss->event_source);
         free(ss->address);
         return mfree(ss);
 }