diff --git a/lib/App/Netdisco/DB/Result/Device.pm b/lib/App/Netdisco/DB/Result/Device.pm
index 6733426f..6ee06a01 100644
--- a/lib/App/Netdisco/DB/Result/Device.pm
+++ b/lib/App/Netdisco/DB/Result/Device.pm
@@ -199,7 +199,7 @@ Returns true if the vendor of the device is "netdisco".
 
 =cut
 
-sub not_pseudo {
+sub is_pseudo {
   my $device = shift;
   return (defined $device->vendor and $device->vendor eq 'netdisco');
 }