diff --git a/src/ca/nciu.cpp b/src/ca/nciu.cpp
index 957dd9ae7..599df9f2b 100644
--- a/src/ca/nciu.cpp
+++ b/src/ca/nciu.cpp
@@ -61,6 +61,8 @@ nciu::nciu (cac *pcac, cacChannel &chan, const char *pNameIn) :
 
     this->f_fullyConstructed = true;
 
+    chan.attachIO (*this);
+
     UNLOCK (pcac);
 }
 
@@ -895,4 +897,4 @@ int nciu::subscriptionMsg ( unsigned subscriptionId, unsigned typeIn,
     UNLOCK ( this->piiu->pcas );
 
     return status;
-}
\ No newline at end of file
+}