add default nettype none
diff --git a/verilog/rtl/user_proj_example.v b/verilog/rtl/user_proj_example.v
index f1feed5..6c1c117 100644
--- a/verilog/rtl/user_proj_example.v
+++ b/verilog/rtl/user_proj_example.v
@@ -1,3 +1,4 @@
+`default_nettype none
 /*
  *-------------------------------------------------------------
  *