diff --git a/verilog/dv/user_aes/Makefile b/verilog/dv/user_aes/Makefile
index fc8841e..c674de1 100644
--- a/verilog/dv/user_aes/Makefile
+++ b/verilog/dv/user_aes/Makefile
@@ -92,6 +92,6 @@
 # ---- Clean ----
 
 clean:
-	rm -f *.elf *.hex *.bin *.vvp *.vcd *.log *.dump
+	rm -f *.elf *.hex *.bin *.vvp *.vcd *.log *.dump *.o
 
 .PHONY: clean hex all
diff --git a/verilog/dv/user_aes/user_aes_tb.v b/verilog/dv/user_aes/user_aes_tb.v
index 2449edf..3d18ba5 100644
--- a/verilog/dv/user_aes/user_aes_tb.v
+++ b/verilog/dv/user_aes/user_aes_tb.v
@@ -206,12 +206,6 @@
 	          begin
                      wait(port_b_in == 8'h18);
 	          end
-                  begin
-		     while(1) begin
-                        tb_uart.read_char3(read_data);
-                        $write ("%c",read_data);
-	             end
-                  end
                join_any
 	
 	       wb_user_core_read_check(`ADDR_SPACE_PINMUX+`PINMUX_SOFT_REG_2,read_data,32'h00000000);