diff --git a/qad/blockview/blockview.cpp b/qad/blockview/blockview.cpp
index fe4cbe6..52ba8da 100644
--- a/qad/blockview/blockview.cpp
+++ b/qad/blockview/blockview.cpp
@@ -1857,7 +1857,7 @@ void BlockView::pasteFromClipboard() {
 	if (!mime->hasFormat(_BlockView_Mime_)) return;
 	QByteArray ba = mime->data(_BlockView_Mime_);
 	//qDebug() << "paste" << ba.size();
-	if (ba.isEmpty()) return;
+	if (ba.size() < 4) return;
 	QList<BlockItem*> bll;
 	QList<BlockBusItem*> bul;
 	QList<QGraphicsItem*> del, gl;