diff --git a/LibOneM2M/OneM2M_Functions.ttcn b/LibOneM2M/OneM2M_Functions.ttcn
index b2ad076fd299d8bb7977e5130067576c179ed2a2..2766f299a353ae31c2a5192e597e5b609652f1d7 100644
--- a/LibOneM2M/OneM2M_Functions.ttcn
+++ b/LibOneM2M/OneM2M_Functions.ttcn
@@ -1399,7 +1399,7 @@ module OneM2M_Functions {
 							vc_aeAuxIndex := v_resourceIndex;
 						} else if (p_resourceType == int9) {
 							//Check that group members are correctly in the group
-							if(not(match(p_requestPrimitive.primitiveContent.group_.memberIDs, vc_response.primitive.responsePrimitive.primitiveContent.group_.memberIDs))) {
+							if(not(match(v_request.primitiveContent.group_.memberIDs, vc_response.primitive.responsePrimitive.primitiveContent.group_.memberIDs))) {
 								setverdict(inconc, __SCOPE__&":INFO: Wrong number of members in group");
 							}
 						}