diff --git a/Labs/10. Interrupt subsystem/lab_10.tb_irq.sv b/Labs/10. Interrupt subsystem/lab_10.tb_irq.sv
index 0d0c9dd..0e26ba6 100644
--- a/Labs/10. Interrupt subsystem/lab_10.tb_irq.sv	
+++ b/Labs/10. Interrupt subsystem/lab_10.tb_irq.sv	
@@ -22,7 +22,7 @@ module lab_10_tb_irq();
 
     string str;
 
-interrupt_controller dut(.*);
+interrupt_controller DUT(.*);
 int err_count;
 
 always #5 clk_i <= ~clk_i;