diff --git a/current-transducer.kicad_pro b/current-transducer.kicad_pro
index 9d71a9d..43638db 100644
--- a/current-transducer.kicad_pro
+++ b/current-transducer.kicad_pro
@@ -460,6 +460,7 @@
       "single_global_label": "ignore",
       "unannotated": "error",
       "unconnected_wire_endpoint": "warning",
+      "undefined_netclass": "error",
       "unit_value_mismatch": "error",
       "unresolved_variable": "error",
       "wire_dangling": "error"