diff --git a/ps2/ps02q/alu.v b/ps2/ps02q/alu.v
index b51f38b..b283152 100644
--- a/ps2/ps02q/alu.v
+++ b/ps2/ps02q/alu.v
@@ -14,6 +14,7 @@
 // Revision:
 // A - initial design
 // B - VHDL code are replaced with Verilog
+// C - ALU logic defined in module
 //
 /////////////////////////////