diff --git a/compact/definitions.xml b/compact/definitions.xml
index 4e71cb428ef850e015e2d467873fe6104770e35d..12df234af9dcda430656cec2c6c5371d0cbd756c 100644
--- a/compact/definitions.xml
+++ b/compact/definitions.xml
@@ -68,7 +68,7 @@
       Layer 4 subassembly ID: 29
       Layer 5 subassembly ID: 30
     </comment>
-    <constant name="SiVertexSubAssembly_ID" value="25"/>
+    <constant name="cb_VTX_ID" value="25"/>
     <comment>
       Unused values reserved for vertex:
       constant name="SiVertexSubAssemblyLayer1_ID" value="121"