diff --git a/OneM2M_PermutationFunctions.ttcn b/OneM2M_PermutationFunctions.ttcn
index 255723fd8166de95b1bdb56bc528a6849be25489..7f28ec28879811e96b73854f208e8b251e49e3eb 100644
--- a/OneM2M_PermutationFunctions.ttcn
+++ b/OneM2M_PermutationFunctions.ttcn
@@ -10911,7 +10911,7 @@ module OneM2M_PermutationFunctions {
 					t_notificationTimer.start;
 					v_elapsedTime := t_notificationTimer.read;
 					//v_myAbsRelTimestamp = 2.0 seconds
-					while (v_elapsedTime < 2.0){ // Wait until window size expires 
+					while (v_elapsedTime < 4.0){ // Wait until window size expires 
 						v_elapsedTime := t_notificationTimer.read;
 					}
 					t_notificationTimer.stop;
@@ -11111,7 +11111,7 @@ module OneM2M_PermutationFunctions {
 					t_notificationTimer.start;
 					v_elapsedTime := t_notificationTimer.read;
 					//v_myAbsRelTimestamp = 2.0 seconds
-					while (v_elapsedTime < 2.0){ // Wait until window size expires 
+					while (v_elapsedTime < 4.0){ // Wait until window size expires 
 						v_elapsedTime := t_notificationTimer.read;
 					}
 					t_notificationTimer.stop;