diff --git a/solenv/config/ssolar.cmn b/solenv/config/ssolar.cmn
index 2d0849d79eee..b10bae7488d9 100644
--- a/solenv/config/ssolar.cmn
+++ b/solenv/config/ssolar.cmn
@@ -113,6 +113,7 @@ common
 		TFDEF
 		TFDIR
 		truetime
+		UDKSTAMP
 		URD_ONLY
 		USE_MAPFILES
 		USE_NAMESPACE