diff --git a/tests/uarttx.tcl b/tests/uarttx.tcl
new file mode 100644
index 0000000..fff5929
--- /dev/null
+++ b/tests/uarttx.tcl
@@ -0,0 +1,9 @@
+set signals [list]
+lappend signals "top.UartTx.reset_n_i"
+lappend signals "top.UartTx.clk_i"
+lappend signals "top.UartTx.valid_i"
+lappend signals "top.UartTx.accept_o"
+lappend signals "top.UartTx.data_i"
+lappend signals "top.UartTx.tx_o"
+lappend signals "top.UartTx.s_uart_state"
+set num_added [ gtkwave::addSignalsFromList $signals ]