diff --git a/de/heat-templates/fragments/NetworkAccVM.yaml b/de/heat-templates/fragments/NetworkAccVM.yaml
index b2f322a..2e1b3f2 100644
--- a/de/heat-templates/fragments/NetworkAccVM.yaml
+++ b/de/heat-templates/fragments/NetworkAccVM.yaml
@@ -40,8 +40,6 @@
 
   network:
     type: OS::Neutron::Net
-    properties:
-      value_specs: { mtu: 9046 }
   subnet:
     type: OS::Neutron::Subnet
     properties: