diff --git a/src/system/kernel/port.cpp b/src/system/kernel/port.cpp
index d9243f7eed..87633200ac 100644
--- a/src/system/kernel/port.cpp
+++ b/src/system/kernel/port.cpp
@@ -1301,7 +1301,7 @@ writev_port_etc(port_id id, int32 msgCode, const iovec* msgVecs,
 
 		locker.Lock();
 
-		if (sPorts[slot].id != id) {
+		if (sPorts[slot].id != id || is_port_closed(slot)) {
 			// the port is no longer there
 			T(Write(sPorts[slot], 0, 0, B_BAD_PORT_ID));
 			return B_BAD_PORT_ID;