diff --git a/led_matrix/tb_lm.v b/led_matrix/tb_lm.v
index dbd4ed2..2f3d32e 100644
--- a/led_matrix/tb_lm.v
+++ b/led_matrix/tb_lm.v
@@ -47,8 +47,7 @@ reg [7:0]x;
 reg [7:0]y;
 always @(posedge sys_clk or negedge sys_rst) begin
     if (sys_rst == 1'b0) begin
-        k_1 <= 1'b0;
-        k_2 <= 1'b0;
+        {k_2, k_1} <= 2'b11;
         x <= 8'b00000000;
         y <= 8'b11111111;  // 所有的都显示算了
     end