diff --git a/example_soc/fpga/fpga_ulx3s.v b/example_soc/fpga/fpga_ulx3s.v
index e7509a0..dd3ecce 100644
--- a/example_soc/fpga/fpga_ulx3s.v
+++ b/example_soc/fpga/fpga_ulx3s.v
@@ -60,4 +60,6 @@ example_soc #(
 	.uart_rx (uart_rx)
 );
 
+assign dbg = 8'h00;
+
 endmodule