diff --git a/lib/puppet/type/neutron_agent_sriov_numvfs.rb b/lib/puppet/type/neutron_agent_sriov_numvfs.rb
index 27cfee4f2..d38cbe33b 100644
--- a/lib/puppet/type/neutron_agent_sriov_numvfs.rb
+++ b/lib/puppet/type/neutron_agent_sriov_numvfs.rb
@@ -4,7 +4,7 @@ Puppet::Type.newtype(:neutron_agent_sriov_numvfs) do
 
   newparam(:name) do
     desc "sriov_numvfs conf as <physical_network>:<number_of_vfs> format"
-    newvalues(/^[a-z0-9-_]+:[0-9]+$/)
+    newvalues(/^[a-z0-9\-_]+:[0-9]+$/)
   end
 
 end