diff --git a/src/ca/udpiiu.cpp b/src/ca/udpiiu.cpp
index 05a0f20a2..86e6045db 100644
--- a/src/ca/udpiiu.cpp
+++ b/src/ca/udpiiu.cpp
@@ -841,6 +841,10 @@ void udpiiu::show ( unsigned level ) const
 
 void udpiiu::wakeupMsg ()
 {
+    if ( this->sockCloseCompleted ) {
+        return;
+    }
+
     caHdr msg;
     msg.m_cmmd = htons ( CA_PROTO_VERSION );
     msg.m_available = htonl ( 0u );