diff --git a/src/vm/VirtualMachine.cc b/src/vm/VirtualMachine.cc
index a14e21fbdc..e76ab8da16 100644
--- a/src/vm/VirtualMachine.cc
+++ b/src/vm/VirtualMachine.cc
@@ -1924,7 +1924,7 @@ VectorAttribute * VirtualMachine::set_up_attach_nic(
 
     int rc = vnpool->nic_attribute(new_nic, max_nic_id+1, uid, vm_id, error_str);
 
-    if ( rc != -1 ) //-2 is not using a pre-defined network
+    if ( rc == -1 ) //-2 is not using a pre-defined network
     {
         delete new_nic;
         return 0;