diff --git a/led_matrix/key.v b/led_matrix/key.v
index a693e5c..3a1a685 100644
--- a/led_matrix/key.v
+++ b/led_matrix/key.v
@@ -63,12 +63,11 @@ reg [7:0] y;
 always @(posedge sys_clk or negedge sys_rst) begin
     if (sys_rst == 1'b0) begin
         x <= 8'b0000_0000;
+        y <= 8'b1111_1111;
     end
     else begin
-        x <= KEY_CODE
+        x <= KEY_CODE;
     end
-
-    endcase
 end
 
 lm u_lm(