diff --git a/Netdisco/lib/App/Netdisco/DB/Result/Node.pm b/Netdisco/lib/App/Netdisco/DB/Result/Node.pm
index 746e277e..6b22144c 100644
--- a/Netdisco/lib/App/Netdisco/DB/Result/Node.pm
+++ b/Netdisco/lib/App/Netdisco/DB/Result/Node.pm
@@ -44,7 +44,7 @@ __PACKAGE__->add_columns(
     original      => { default_value => \"now()" },
   },
   "vlan",
-  { data_type => "text", is_nullable => 1, default_value => '0' },
+  { data_type => "text", is_nullable => 0, default_value => '0' },
 );
 __PACKAGE__->set_primary_key("mac", "switch", "port", "vlan");
 
diff --git a/Netdisco/lib/App/Netdisco/DB/Result/NodeWireless.pm b/Netdisco/lib/App/Netdisco/DB/Result/NodeWireless.pm
index dc00a0e5..ad1f5fd6 100644
--- a/Netdisco/lib/App/Netdisco/DB/Result/NodeWireless.pm
+++ b/Netdisco/lib/App/Netdisco/DB/Result/NodeWireless.pm
@@ -38,7 +38,7 @@ __PACKAGE__->add_columns(
     original      => { default_value => \"now()" },
   },
   "ssid",
-  { data_type => "text", is_nullable => 1, default_value => '' },
+  { data_type => "text", is_nullable => 0, default_value => '' },
 );
 __PACKAGE__->set_primary_key("mac", "ssid");