diff --git a/library/GSM_RR_Types.ttcn b/library/GSM_RR_Types.ttcn
index 9d71f8081..a7d927a89 100644
--- a/library/GSM_RR_Types.ttcn
+++ b/library/GSM_RR_Types.ttcn
@@ -1029,4 +1029,4 @@ module GSM_RR_Types {
 		}
 	};
 
-} with { encode "RAW" ; variant "FIELDORDER(msb)" }
+} with { encode "RAW" ; variant "FIELDORDER(msb)" variant "BYTEORDER(last)" }