diff -r 4c7a353cf583 -r c8ecddbd99e9 src/mainwindow.cpp
--- a/src/mainwindow.cpp	Sat Jan 28 14:13:01 2017 +0200
+++ b/src/mainwindow.cpp	Sat Jan 28 14:14:28 2017 +0200
@@ -365,7 +365,7 @@
 		obj->destroy();
 
 	refresh();
-	return length(selCopy);
+	return countof(selCopy);
 }
 
 // ---------------------------------------------------------------------------------------------------------------------
@@ -719,7 +719,7 @@
 //
 void MainWindow::spawnContextMenu (const QPoint& position)
 {
-	const bool single = (length(selectedObjects()) == 1);
+	const bool single = (countof(selectedObjects()) == 1);
 	LDObject* singleObj = single ? selectedObjects().first() : nullptr;
 
 	bool hasSubfiles = false;