diff --git a/TS-0019-Abstract_Test_Suite_&_implementation_eXtra_Information_for_Test.md b/TS-0019-Abstract_Test_Suite_&_implementation_eXtra_Information_for_Test.md
index 2898ee596f0474ca1a8537bc769b2fd147b90017..c5ba8e4951083cfb3321c99638bdf132ca14814b 100644
--- a/TS-0019-Abstract_Test_Suite_&_implementation_eXtra_Information_for_Test.md
+++ b/TS-0019-Abstract_Test_Suite_&_implementation_eXtra_Information_for_Test.md
@@ -379,7 +379,7 @@ The upper tester triggering message type maps to particular message formats for
 |Upper Tester Control Message Type |TTCN-3 Primitives |Direction |Direction |
 |-|-|-|-|
 |Upper Tester Control Message Type |TTCN-3 Primitives |TS |UT |
-|Trigger |UtTrigger Primitive | | |
+|Trigger |UtTrigger Primitive | TS| UT|
 |Trigger Acknowledgement |UtTriggerAck Primitive | | |