diff --git a/src/map/imgmap.cpp b/src/map/imgmap.cpp
index 8206f2c1..4521c996 100644
--- a/src/map/imgmap.cpp
+++ b/src/map/imgmap.cpp
@@ -167,11 +167,6 @@ void IMGMap::ll2xy(QList<MapData::Point> &points)
 	}
 }
 
-static void render(RasterTile &tile)
-{
-	tile.render();
-}
-
 void IMGMap::draw(QPainter *painter, const QRectF &rect, Flags flags)
 {
 	Q_UNUSED(flags);
@@ -224,7 +219,7 @@ void IMGMap::draw(QPainter *painter, const QRectF &rect, Flags flags)
 		}
 	}
 
-	QFuture<void> future = QtConcurrent::map(tiles, render);
+	QFuture<void> future = QtConcurrent::map(tiles, &RasterTile::render);
 	future.waitForFinished();
 
 	for (int i = 0; i < tiles.size(); i++) {
diff --git a/src/map/mbtilesmap.cpp b/src/map/mbtilesmap.cpp
index 525beb0d..63e5610a 100644
--- a/src/map/mbtilesmap.cpp
+++ b/src/map/mbtilesmap.cpp
@@ -49,11 +49,6 @@ private:
 
 #define META_TYPE(type) static_cast<QMetaType::Type>(type)
 
-static void render(MBTile &tile)
-{
-	tile.load();
-}
-
 static double index2mercator(int index, int zoom)
 {
 	return rad2deg(-M_PI + 2 * M_PI * ((double)index / (1<<zoom)));
@@ -314,7 +309,7 @@ void MBTilesMap::draw(QPainter *painter, const QRectF &rect, Flags flags)
 		}
 	}
 
-	QFuture<void> future = QtConcurrent::map(tiles, render);
+	QFuture<void> future = QtConcurrent::map(tiles, &MBTile::load);
 	future.waitForFinished();
 
 	for (int i = 0; i < tiles.size(); i++) {
diff --git a/src/map/tileloader.cpp b/src/map/tileloader.cpp
index 3642ee01..9555e83c 100644
--- a/src/map/tileloader.cpp
+++ b/src/map/tileloader.cpp
@@ -41,11 +41,6 @@ private:
 	QImage _image;
 };
 
-static void render(TileImage &ti)
-{
-	ti.load();
-}
-
 static QString quadKey(const QPoint &xy, int zoom)
 {
 	QString qk;
@@ -101,7 +96,7 @@ void TileLoader::loadTilesAsync(QVector<Tile> &list)
 	if (!dl.empty())
 		_downloader->get(dl, _authorization);
 
-	QFuture<void> future = QtConcurrent::map(imgs, render);
+	QFuture<void> future = QtConcurrent::map(imgs, &TileImage::load);
 	future.waitForFinished();
 
 	for (int i = 0; i < imgs.size(); i++) {
@@ -153,7 +148,7 @@ void TileLoader::loadTilesSync(QVector<Tile> &list)
 		}
 	}
 
-	QFuture<void> future = QtConcurrent::map(imgs, render);
+	QFuture<void> future = QtConcurrent::map(imgs, &TileImage::load);
 	future.waitForFinished();
 
 	for (int i = 0; i < imgs.size(); i++)