diff --git a/verilog/rtl/simpleuart.v b/verilog/rtl/simpleuart.v
index 66e1915..4fe9f0c 100644
--- a/verilog/rtl/simpleuart.v
+++ b/verilog/rtl/simpleuart.v
@@ -220,3 +220,4 @@
         end
     end
 endmodule
+`default_nettype wire