diff --git a/DMX-2.0/SequenceurMacro.cs b/DMX-2.0/SequenceurMacro.cs
index 9e29526..4b13ff2 100644
--- a/DMX-2.0/SequenceurMacro.cs
+++ b/DMX-2.0/SequenceurMacro.cs
@@ -356,10 +356,8 @@ namespace DMX2
 						}
 					}
 
-					if (topPresent) {
-						if (timeStamp > topSuivant) {
+					while (topPresent && (timeStamp >= topSuivant)) {
 							LigneSuivante ();
-						}
 					}
 				} finally {
 					Monitor.Exit (this);
diff --git a/DMX-2.0/SequenceurMidi.cs b/DMX-2.0/SequenceurMidi.cs
index a5ac1c8..1530ab2 100644
--- a/DMX-2.0/SequenceurMidi.cs
+++ b/DMX-2.0/SequenceurMidi.cs
@@ -208,10 +208,8 @@ namespace DMX2
 
 			if (Monitor.TryEnter (this)) {
 				try {
-					if (topPresent) {
-						if (timeStamp > topSuivant) {
+					while (topPresent &&(timeStamp >= topSuivant)) {
 							LigneSuivante ();
-						}
 					}
 				} finally {
 					Monitor.Exit (this);
diff --git a/DMX-2.0/SequenceurOSC.cs b/DMX-2.0/SequenceurOSC.cs
index 5bf8ab6..243f6f5 100644
--- a/DMX-2.0/SequenceurOSC.cs
+++ b/DMX-2.0/SequenceurOSC.cs
@@ -208,10 +208,8 @@ namespace DMX2
 
 			if (Monitor.TryEnter (this)) {
 				try {
-					if (topPresent) {
-						if (timeStamp > topSuivant) {
+					while (topPresent&&(timeStamp >= topSuivant)) {
 							LigneSuivante ();
-						}
 					}
 				} finally {
 					Monitor.Exit (this);