diff --git a/src/ca/netReadCopyIO.cpp b/src/ca/netReadCopyIO.cpp
index ce76c86b1..e173e170e 100644
--- a/src/ca/netReadCopyIO.cpp
+++ b/src/ca/netReadCopyIO.cpp
@@ -73,8 +73,9 @@ void netReadCopyIO::exceptionNotify ( int status,
 
 void netReadCopyIO::show ( unsigned level ) const
 {
+    int tmpType = static_cast <int> ( this->type );
     printf ( "read copy IO at %p, type %s, element count %u\n", 
-        this, dbf_type_to_text ( this->type ), this->count );
+        this, dbf_type_to_text ( tmpType ), this->count );
     if ( level > 0u ) {
         printf ( "\tsequence number %u, user's storage %p\n",
             this->seqNumber, this->pValue );