diff --git a/src/project.v b/src/project.v
index a289d00..eeedfb5 100644
--- a/src/project.v
+++ b/src/project.v
@@ -7,7 +7,8 @@
 
 module tt_um_example (
     input  wire       VGND,
-    input  wire       VPWR,
+    input  wire       VDPWR,    // 1.8v power supply
+//    input  wire       VAPWR,    // 3.3v power supply
     input  wire [7:0] ui_in,    // Dedicated inputs
     output wire [7:0] uo_out,   // Dedicated outputs
     input  wire [7:0] uio_in,   // IOs: Input path