diff --git a/src/main/java/de/neemann/digital/core/io/PowerSupply.java b/src/main/java/de/neemann/digital/core/io/PowerSupply.java
index 750548daf..f9e41cf27 100644
--- a/src/main/java/de/neemann/digital/core/io/PowerSupply.java
+++ b/src/main/java/de/neemann/digital/core/io/PowerSupply.java
@@ -20,7 +20,7 @@ public class PowerSupply implements Element {
      * Enforces a power supply
      */
     public static final ElementTypeDescription DESCRIPTION
-            = new ElementTypeDescription(PowerSupply.class, input("VCC"), input("GND"))
+            = new ElementTypeDescription(PowerSupply.class, input("VDD"), input("GND"))
             .addAttribute(Keys.ROTATE)
             .addAttribute(Keys.LABEL);