diff --git a/servers/inet/sr.c b/servers/inet/sr.c
index 4fdc0257c..b7b16c13e 100644
--- a/servers/inet/sr.c
+++ b/servers/inet/sr.c
@@ -630,7 +630,9 @@ int can_enqueue;
 	ref= 0;
 #endif
 	operation= mq->mq_mess.m_type;
+#ifdef __minix_vmd
 	assert(operation != DEV_CANCEL);
+#endif
 
 	if (can_enqueue)
 		mp= &mq->mq_mess;