diff --git a/src/backend/Simulator.java b/src/backend/Simulator.java
index 18103fb..fe64f96 100644
--- a/src/backend/Simulator.java
+++ b/src/backend/Simulator.java
@@ -149,7 +149,8 @@ public class Simulator extends Thread {
 	 * method called when clicking pause button
 	 */
 	public void togglePause() {
-		// TODO : actually toggle the corresponding flag
+		pauseFlag= ! pauseFlag;
+		// It changes the boolean value associated to pauseFlag (pauseFlag= not pauseFlag)
 	}
 	
 	/**