diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 9c2f7bcae..112e84c7d 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2005-03-09  Christopher Faylor  <cgf@timesys.com>
+
+	* net.cc (dup_ent): Avoid dereferencing a null pointer in a debug_printf.
+
 2005-03-09  Christopher Faylor  <cgf@timesys.com>
 
 	* path.cc (path_conv::check): Treat ENOSHARE similarly to ENOENT when
diff --git a/winsup/cygwin/net.cc b/winsup/cygwin/net.cc
index 3fee9eb91..ed52807d6 100644
--- a/winsup/cygwin/net.cc
+++ b/winsup/cygwin/net.cc
@@ -389,7 +389,7 @@ dup_ent (void *old, void *src0, struct_type type)
   if (old)
     {
       debug_printf ("freeing old %sent structure \"%s\" %p\n", entnames[type],
-		    ((unionent *) old)->name, old);
+		    old ? ((unionent *) old)->name : "<null!>", old);
       free (old);
     }