diff --git a/tcl/drivers/ccu4.tcl b/tcl/drivers/ccu4.tcl
index a255017..1726313 100644
--- a/tcl/drivers/ccu4.tcl
+++ b/tcl/drivers/ccu4.tcl
@@ -228,7 +228,7 @@ proc stdConfig::ccu4 {{title CCU4} args} {
     
     node hea out
     prop label "add. He channels"
-    prop enum 0,1,6
+    prop enum 0,1,6=6
 
     node hch out -int
     prop label "LHe channel"