diff --git a/src/org/linphone/ContactsManager.java b/src/org/linphone/ContactsManager.java
index bd3d457dc..525882dc1 100644
--- a/src/org/linphone/ContactsManager.java
+++ b/src/org/linphone/ContactsManager.java
@@ -55,6 +55,7 @@ public class ContactsManager extends ContentObserver {
 	private boolean preferLinphoneContacts = false, isContactPresenceDisabled = true, hasContactAccess = false;
 	private ContentResolver contentResolver;
 	private Context context;
+	private ContactsFetchTask contactsFetchTask;
 	
 	private static ArrayList<ContactsUpdatedListener> contactsUpdatedListeners;
 	public static void addContactsListener(ContactsUpdatedListener listener) {
@@ -78,6 +79,13 @@ public class ContactsManager extends ContentObserver {
 		sipContacts = new ArrayList<LinphoneContact>();
 	}
 	
+	public void destroy() {
+		if (contactsFetchTask != null && !contactsFetchTask.isCancelled()) {
+			contactsFetchTask.cancel(true);
+		}
+		instance = null;
+	}
+	
 	@Override
 	public void onChange(boolean selfChange) {
 		 onChange(selfChange, null);
@@ -213,7 +221,11 @@ public class ContactsManager extends ContentObserver {
 	}
 	
 	public synchronized void fetchContactsAsync() {
-		new ContactsFetchTask().execute();
+		if (contactsFetchTask != null && !contactsFetchTask.isCancelled()) {
+			contactsFetchTask.cancel(true);
+		}
+		contactsFetchTask = new ContactsFetchTask();
+		contactsFetchTask.execute();
 	}
 	
 	
diff --git a/src/org/linphone/LinphoneManager.java b/src/org/linphone/LinphoneManager.java
index dd7699b61..d4534d5a3 100644
--- a/src/org/linphone/LinphoneManager.java
+++ b/src/org/linphone/LinphoneManager.java
@@ -805,6 +805,7 @@ public class LinphoneManager implements LinphoneCoreListener, LinphoneChatMessag
 
 	public static synchronized void destroy() {
 		if (instance == null) return;
+		ContactsManager.getInstance().destroy();
 		getInstance().changeStatusToOffline();
 		sExited = true;
 		instance.doDestroy();