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..f9ff7cbd52e60dc994a738424af5a5df6a81238d 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
@@ -225,7 +225,7 @@ Test configurations are defined to test different entities such as CSE and AE, e
 
 Figure 5.2.1-1 shows a AE test configuration which is mapped to CF03 in clause 6.3.3.3 in oneM2M TS0015 <a href="#_ref_i.2">[i.2]</a> and aligns with conformance test system architecture in clause 6.3.3.2 in oneM2M TS-0015 <a href="#_ref_i.2">[i.2]</a>.
 
-The TTCN-3 Test Component in Test System sends triggering actions or behaviour to the Upper Tester Application of SUT through upper tester transport link Ut while the IUT sends/receives oneM2M service primitives through Mca to/from CSE in Test System.
+The TTCN-3 Test Component in the Test System sends triggering actions or behaviour to the Upper Tester Application of SUT through upper tester transport link Ut while the IUT sends/receives oneM2M service primitives through Mca to/from CSE in Test System.
 
 
 ![media/image6.png](media/image6.png)