diff --git a/qtviewer_planetosm/osmtiles/layer_tiles_page.cpp b/qtviewer_planetosm/osmtiles/layer_tiles_page.cpp
index 88c55dbfe96b72dd1718decdedf9e5b5a80fa3c5..1eefc5bc16f863ec6de66ef611b4392f79ee0f03 100644
--- a/qtviewer_planetosm/osmtiles/layer_tiles_page.cpp
+++ b/qtviewer_planetosm/osmtiles/layer_tiles_page.cpp
@@ -63,8 +63,8 @@ namespace QTVOSM{
 	void layer_tiles_page::slot_message(QString message)
 	{
 		m_pPendingTasksModel->appendRow(new QStandardItem(message));
-		if (m_pPendingTasksModel->rowCount()>256)
-			m_pPendingTasksModel->removeRows(0,m_pPendingTasksModel->rowCount()-256);
-
+		if (m_pPendingTasksModel->rowCount()>128)
+			m_pPendingTasksModel->removeRows(0,m_pPendingTasksModel->rowCount()-128);
+		ui->listView_messages->scrollToBottom();
 	}
 }
diff --git a/qtviewer_planetosm/osmtiles/urlDownloader.cpp b/qtviewer_planetosm/osmtiles/urlDownloader.cpp
index e201190cd4917ffa220721fda14564967e14dcec..4bb25c8c1c0fe6f9e42302a2d3c5d10768e72d97 100644
--- a/qtviewer_planetosm/osmtiles/urlDownloader.cpp
+++ b/qtviewer_planetosm/osmtiles/urlDownloader.cpp
@@ -110,16 +110,23 @@ namespace QTVOSM{
 		QString uniqueKey = sourceUrl + ":" +  DestinDir +":" + filename;
 		m_mutex_protect.lock();
 		if (m_set_tileAddress.contains(uniqueKey)==true)
-			m_listTask.removeAll(tk);
+		{
+			if (newerFirst)
+			{
+				m_listTask.removeAll(tk);
+				m_listTask.push_front(tk);
+			}
+		}
 		else
+		{
 			m_set_tileAddress.insert(uniqueKey);
-		if (m_map_pendingTasks.size()<m_nMaxAsynThread)
-			bNeedEmit = true;
-		if (newerFirst)
-			m_listTask.push_front(tk);
-		else
-			m_listTask.push_back(tk);
-
+			if (m_map_pendingTasks.size()<m_nMaxAsynThread)
+				bNeedEmit = true;
+			if (newerFirst)
+				m_listTask.push_front(tk);
+			else
+				m_listTask.push_back(tk);
+		}
 		m_mutex_protect.unlock();
 		if (bNeedEmit)
 			emit evt_doNextJob();